So you think subtlety isn't as funny as explicitness? If Groucho Marx, for instance, had said in a movie "I'm gonna have some sex tonight", would that have been funnier than him saying "I'm gonna go back and brush the crackers off of my bed. I'm expecting company."?
Either way, I've seen John K. cartoons where he's had no restrictions, and they're just not funny. Ever see the ones he produced for the adult swim website? *Shudder*
Besides that, he's a pretentious egotist. He seems to think that writing in a cartoon should be more of an afterthought, that the animators should just come up with a bunch of gags and worry about how they're going to fit together later, and that any cartoon that does it any other way is inherently inferior to cartoons done his way. And he seems to think that every successful animated series since the 1960's is complete rubbish, and the only good cartoons are the ones he personally was involved in.