No, because adventure time was sort of the one that started the trend of the 2010's.
Being technical, it started with Star Vs, but back then it was a more niche thing, it blew up with Thundercats Roar! >>108084393
RCDart is an artist that used to be pretty popular in art spaces, particularly twitter and tumblr. They made sfw and nsfw, and their old style (like 2015) was super good.
They made a nsfw account on tumblr in. 2016? I think? and they had a particular fetish: Transgender men with visible tits, because of this every draw they did started to get more and more deformed, making the chest bigger, making lines rounder, making everything more exaggerated, to the point where their new art style was simple doodles of shapes, seeing their style go through a downward spiral due to their fetishization was super sad, their style was pretty cool.
They got called out for their transgender fetish a few months later, and after that, for drawing racist caricatures, and because of how mad ugly their new style is they became a huge meme, this guy actually made every single community bond, /co/ loathes them, tumblr loathes them, Reddit loathes them, is rare seeing anyone even defend the bastard.