As you can see there's a reluctance to criticize those who've passed on, unless you can show the things they did in life somehow harmed people to this day. I had to look him up. I doubt even most American artists have heard of him. He may have minsterpreted some things, but that's about it. (Coyote is most often held up as someone you shouldn't be like, for example. He's an object of mockery.) I don't see any intent by him to harm or mislead.