I'd bet a lot of early punk rockers credit the Beatles as an influence, doesn't mean they invented punk rock.
For comparison a list of pre-edgy 1980's cartoons recommended for adults
https://www.animationforadults.com/2015/05/afas-top-20-carto...
vs a 90's era list of cartoons recommended for adults. I think you'll find a very huge difference in the types of shows being recommended.
https://www.ranker.com/list/90s-adult-cartoons/ranker-tv
>Hell, the asshole co-creator of Ren and Stimpy worked with him on Mighty Mouse.
But it was him not Bakshi that pushed that adult style onto mainstream television. Don't get me wrong. I really enjoy Bakshi's work but he isn't really the one responsible for bringing edgy cartoons to home television.