[Teen Titans Go!] is absolutely hated by a certain contingent of superhero fans. Some hate it for parodying the 2003 Teen Titans cartoon, even though it’s made by literally the same people, same voice actors, same animators, and uses the same designs. Some hate it because it’s disrespectful of the source material, portraying the Teen Titans as dumb jerks who are easily distracted from saving lives and die all the time. Some hate it for its chibi designs and flattened animation style. Some hate it because Cartoon Network shows it too often. Basically, some fans who hate Teen Titans Go! hate it because it’s popular with kids.
And these are all the reasons I love watching Teen Titans Go! with my kids.