Firstly, I'm not American. The first time I saw a television show, I was 26 years old. Television was banned in my home country.
I have no idea who Dangerfield and Don Rickles are, and i don't care. I don't think comedians who rip off other people are funny. Nor do I think they are funny when they are vulgar. I cannot stand sarcasm, etc. So, yes, I can decry Chris Rock. Then, again, I don't watch reality shows, comedy, or much of anything.
Sorry, you think that Will Smith is 'so wrong is o many ways.' To me, it took courage to apologize, and he resigned from the Academy. He had a momentary lapse. So what.
Let him who is without sin throw the first stone.