It's a good thing JJK is carried by Mappa. I even appreciate that.
People see how good animations really look like if studios don't always outsource their episodes to some cheap studios abroad. Pierrot really did this crap a lot with Naruto. Heck, these fuckers did this IN THE FINAL WAR. Hashirama vs Madara? Looked like paint.
Tokyo Ghoul even took it worse. What the hell was the TG:re anime in terms of animations? The characters didn't even look similar in comparison to the manga. The art style was so off...
At least with animes like JJK, it forces these studios to put more efforts into their episodes. That's another reason why Toei started going for very fluid animations as well in One Piece. Prior to that? We got Dressrosa and WCI...