Western animation is stuck in a cruel samsara of animators pushing the content of their media with either sophisticated storyline and characters, or more mature humor. However every few year the industry collapses when the capitalists decided that pushing out mindless dreck is cheaper and more easily merchandisable so they pulled the plug to the former and we're back to square one again. In fact we're seeing one goes down right now with Warner Bros-Discovery purging all of their animated shows.

"Adult" animations like The Simpsons, South Park, or Rick & Morty have escaped this cycle but instead of ending in nirvana, they instead ends up in another hellish cycle of terrible pop culture references, guest appearance, and racism.