The main problem is that it doesn't have the same charm as the original series. No serious or dramatic moments or character development, it's all just supposed to be comedy. In addition, it barely stays true to the source material at all. The universe of Teen Titans Go! is a pancake surrounded by a butter wall, for crying out loud! Attempts at humor are often either rude, disrespectful, or contrived, consisting mostly of extremely low-brow jokes and toiletries, twerking, and gross-out humor. There are dated pop culture references that feel out-of-place because they don’t even need to be there. The episode "Toddler Titans... Yay!" mostly parodies Dora the Explorer, with Beast Boy's character, Greenie the Clue Dog, parodying Blue from Blue's Clues and its reboot, Blue's Clues & You!

The series now has 6 seasons and over 300+ episodes and counting, meaning it’s lasted longer than the original show, and while it isn’t too much, it's too long for a widely-hated show. The show will also often jump the shark because of this, and it could have been been cancelled earlier if not for Cartoon Network airing countless reruns of the series. Clearly, this spin-off only exists just to try desperately to get a cheap laugh out of the audience and for Cartoon Network to try boosting ratings so that newer shows like Mao Mao: Heroes of Pure Heart won't be cancelled.

The Flash animation, while not terrible by itself, looks pretty mediocre and choppy-looking compared to the original 2003 show's animation. On top of that, there are easily noticeable errors in some episodes (e.g. characters' eyes disappearing, frames where someone stands still like a statue, characters switching places from time to time, characters' emotions not matching what they are saying and voice acting pauses).In one episode, Beast Boy jumps onto Raven’s leg and there's a frame where Beast Boy is still standing. The animation is worse than usual in some episodes, like "Staring at the Future". In Seasons 1-3, the color scheme is way too bright. Likewise, the characters tend to make odd-looking facial expressions.

Some episodes have misleading titles which never made any sense such as taking a line from the episode: "Croissant" barely has any croissant, and almost the entire episode is gross. "Hey You, Don't Forget About Me in Your Memory" is not even an actual line. "The Return of Slade" is probably the worst offender. "Smile Bones" shows no bones at all, but instead of teeth. "Man Person" is about Beast Boy getting a scar and realizing that it makes him look tough, and as a result, he purposely loses his body parts to look tough. What's his name? If you guessed Man Person, you're wrong. It's Scar Man. Man Person is, again, a mere line. Ugh. "Batman v Teen Titans: Dark Injustice", being an April Fools' Day episode, isn't about the Titans fighting Batman. It's about the Titans pulling pranks on each other. "Dog Hand" is not the main subject. The dog hand is Cyborg's hand from Trigon. What it's actually about is Trigon coming to visit Raven. Not helping was that it was originally called "Raven's Daddy Dearest". So that begs the question: why did you change the title? The same thing went for "Nose Mouth" since it's another episode which the title is a play on Cyborg's physical alteration when it isn't the main focus. "Breakfast Cheese" was, once again, a very forgettable line at the end. The "breakfast cheese" is pizza. Instead, Starfire tries to enact world peace and end fighting. "Serious Business" hardly ever deals with serious issues. Instead, it's all about the Titans getting emotional over the bathroom. To make matters worse, all the new episodes have misleading names, and it is still going on.

Many villains aren't much of a threat. For example, Trigon, once an embodiment of evil in the comics and the Teen Titans series, is portrayed as a sitcom father rather than a demonic antagonist.

The creators and writers cannot handle even the slightest form of criticism whatsoever, going as far as purposely making episodes specifically to mock either the criticism they get or critics, Internet reviewers, and even fans of the original Teen Titans, with "The Return of Slade" being the worst offender.

More than enough inappropriate moments in a kids' show (though it was rated TV-PG).There are so many of them that, out of shows like The Amazing World of Gumball, this show suffers from a lot of censorship, alongside shows like Regular Show and Adventure Time. One of the most infamous examples is in the episode "Real Magic". During Raven's "Hate It" montage, there is a scene where Beast Boy is laying on Raven's bed in only his underwear, gesturing her to come closer. This scene was cut out in the UK, Australia and Southeast Asia due to sexual content and complaints from parents. Characters are seen twerking in some episodes, as seen in "Booty Scooty", "Boys vs. Girls", and "The Fourth Wall." "Squash & Stretch" has animal cruelty in a kids' show. The episode "Butt Atoms" has a panty shot. The Titans are shown worshiping Raven's legs after she becomes "Lady Legasus" in "Legs".

The Titans look way too young to even be teenagers. They actually look more like fifth graders than actual teenagers. On top of that, they have been flanderized to the point where they scarcely behave anything like their old selves:

Robin went from a strict team leader to a dominant and severely paranoid arrogant jerk. He has also become a bit of a punching bag, as his team often doesn't listen to him, and often ridicules him, even if he didn't do anything wrong to them. He also has an obsession for Starfire.

Starfire went from the perfect romantic love interest for Robin to a child-like and immature alien. In the episode "Breakfast Cheese" she acts like a hypocrite, as she tells the Titans to make peace with the H.I.V.E. Five, even though they fought them in previous episodes. She also adds "the" in almost every sentence she says and it gets annoying really quickly. Not to mention that she screams a lot that it sounds like Hynden Walch is yelling at the top of her lungs. Though she is at least more likeable than Robin, Cyborg, and Beast Boy.

Beast Boy went from a childish yet serious shapeshifter to an immature, whiny, destructive party animal and a lazy couch potato who barely gets up to do something simple.

Cyborg went from having likable comedic traits to being an annoying, idiotic slacker like Beast Boy, with his giraffe neck gag being annoying, old and irritating at times.

Raven, despite being the most likable out of the five, went from a gothic short-tempered, yet caring girl to a hypocritical fan of Pretty Pretty Pegasus (a parody of My Little Pony: Friendship is Magic). She has also been turned into an emo, depressed, and disastrous teenager who has her hood up all the time. Ignoring this, they also behave more like villains than heroes and are far more annoying and unlikable than the villains themselves. In "The HIVE Five", the Titans continuously torment the H.I.V.E., even though no one in the latter group was doing anything bad throughout the entire episode. In "Finally a Lesson", the Titans deliberately and harshly kick out the villains from their apartment homes. In "Movie Night", Robin attacks Control Freak and steals his television, even though he was innocent at the time. In "Caged Tiger", Dr. Light tries to redeem himself and join the Titans, but Robin, Cyborg, and Beast Boy refuse to accept his redemption and instead mercilessly beat him up for no apparent reason. In "Snuggle Time", to get more free time with their cats and drink hot cocoa, the Titans straight-up become villains, build an evil lair, and remorselessly slaughter Batman, Batgirl, the Titans East, Aqualad, and Aquaman. The Titans are constantly gunning for Robin's position as leader to near-Starscream levels. The Titans claim they are "protecting" Jump City to justify their destructive behaviors and cause more collateral damage than any of the villains. They treat it like their playground and are disrespectful towards citizens and even villains on their day off, intentionally creating enemies through ridiculous insults and inflicting harm on individuals such as the Mocking Birds, Zan (one of the Wonder Twins), Aqualad, etc.

It can essentially be an 11-minute long "it's made for kids" excuse, and even a huge insult to the fans of the original Teen Titans since it disrespects the content and characterization from its predecessor.

Bad dialogue that requires more work.

Annoying and repetitive songs such as "Waffles", "I'm a Hot Pepper", "Pee Pee Dance", "I Love Pie", "Uncle Jokes", "the Poop Song", "Tofu in My Mouth", "the Booty Scooty Dance", and the short remixed title theme by Mix Master Mike.

It often insults many other franchises of every type among other stuff, especially other DC properties as well as some film franchises like The Matrix, E.T.: The Extra-Terrestrial, and Indiana Jones. Two episodes, "Let's Get Serious" and "Money Grandma", even insulted the Young Justice fan community and George Washington, respectively, as well.

There is little-to-no continuity, and so many episodes aren't even connected. This is because Michael Jelenic confessed that he’s stressed about the idea doing episodes that are all connected because he worked on Young Justice and admitted it was difficult to keep up with the whole story. The Titans get killed off in some episodes and get revived in later episodes, which is executed poorly unlike the Kenny gag in South Park.

Many episodes in the series have a lot of padding, despite each of them having a regular run-time of 11 minutes. In "Waffles", there is a scene where Robin makes waffles, and it goes on for 25 seconds.

It became self-aware of how bad it is and is proud of that, as shown in the episode "The Fourth Wall" where the Titans tell this to Control Freak in the end.

In the series, Darkseid is voiced by "Weird Al" Yankovic, who never once sings.

It completely ruins the relationship between Robin and Starfire, because in this series Robin is either psychotically obsessed with Starfire or really violent towards her (especially in "Hey You, Don't Forget About Me in Your Memory"), and Starfire states in no uncertain terms that she doesn't love Robin at all.

The scary and/or dramatic music from episodes in the first season are basically recycled from videos on YouTube.

Bad morals and life lessons that include, but are not limited to:

The Titans, throughout the entire series, teach kids to be extremely immature and never act their ages. "Pyramid Scheme" and "The Dignity of Teeth" both encourage greed. "Staring at the Future" states that responsibility is bad and that if your friends are responsible members of society, their lives are horrible and you absolutely must screw them over. "Artful Dodgers" encourages cheating. "Mas y Menos" encourages glory-hounding and showboating. "The True Meaning of Christmas" states that Christmas is all about presents and nothing else; the Titans even blow up Santa's workshop when he preaches the true meaning of Christmas. "Books" states that books are bad for you. "Knowledge" states that intelligence is bad for you; it makes you an insufferable, judgmental, and overly-critical person who no one wants to be friends with. "Boys vs Girls" is about accepting sexism. It teaches kids that gender equality is for wimps and that cooties exist, neither of which are true. "Hot Garbage" encourages hoarding, a serious psychological problem. "Accept the Next Proposition You Hear" states that you shouldn't think and act for yourselves, but instead depend on others. "Hey You, Don't Forget About Me in Your Memory" boils down to "If you fail to live up to your label, take it out on your friends." "Nean" teaches it's okay to be mean sometimes. "Smile Bones" encourages gluttony or weight gaining. "Think About Your Future" says that you should make bad life decisions and live your lives up to the shortest.

It spawned two bad crossover episodes with The Powerpuff Girls (2016) and ThunderCats Roar titled "TTG vs. PPG" and "Teen Titans Roar!".

Later seasons have little, if anything, to improve over the earlier seasons.

Bumblebee, a member of Titans East, becomes the sixth Titan who appeared in the "Flashback" episode before she began to be part of the Teen Titans of "Forest Pirates" to "The Viewers Decide".

Whenever the Justice League characters make an appearance in any of the episodes, they never speak but make minor human noises such as laughing and crying, which is a huge insult to Justice League. That's because the creators couldn't pay to hire the voice actors who voice the characters when they could've just hired new ones to replace the original ones!

The film had such a random cast voicing superheroes, with Nicolas Cage voicing Superman, Jimmy Kimmel playing Batman, Lil Yachty playing Green Lantern and Halsey playing Wonder Woman.

Although the first few episodes were okay like the pilot episode, many other later episodes started to go downhill for all the reasons mentioned above.