Yeah, as has been said I think for many it's less that there are animated comedies with excessive swearing and crude humor, but that those are the only kind of cartoons targeted towards teens and adults that can be made. Don't get me wrong I love many of the cartoons that are aimed more towards adults, but I'll be the first to admit adult cartoon genre diversity (at least in the US) is pretty lacking.
I mean shit, before 2017 there were virtually no major adult action cartoons made at all, and that's not even getting into other genres that will simply not be invested in if animated. Luckily, it has gotten better recently with stuff like Samurai Jack S5, Undone, Castlevania, Primal, etc. but clearly a lot more work needs to be done to separate "adult" and crude humor as genres when in comes to cartoons.