Not with someone I was that enamored with. I liked some sports figures that I lost respect for when I found out they took steroids though. I moved on being that I didn't know them personally. When I found out that A-Rod was a steroid guy and an asshole, I still wanted him to do well when he was on the Yankees. There are some figures in the movies who have done some bad things, but I can still enjoy their movies. I still know they're assholes. Try to separate the art from the person. I have seen people do it with R. Kelly just to name one. I don't think there is any shame in enjoying something good or entertaining that someone has done, even if they are an asshole or did something like Cosby did. People knew that Jerry Lewis seemed to treat most people like shit, but still laughed at his comedy. I just wouldn't go around praising Cosby's work in public lol

If Bill Cosby would have been a nobody then no one would have ever care about a thing he may have or have not done

He well may have done some terrible things.

And personally, I think him AND MJackson should have been able to more successfully pursue their kinks, whatever they were/are...

But the court of public opinion has a VERY LOW standard of guilt or innocence...

I don't think it your opinion of people that changes in the light of relations about their abhorrent personal lives, but your esteem.
Comedy is reliant on the likeability of the comic or the comedian.
When you don't like them as a person anymore, or lose respect for them owing to evil behaviour, their talent, while remaining unaffected is tainted.
A case in point was Fatty Arbuckle. Once accused of rape and manslaughter his reputation suffered so badly that he could never work on screen again, even after being found innocent (the girl in question Virginia Rapp died of a drug overdose) however he did work as a producer, director and writer under his actual name Roscoe Arbuckle with no change in the opinion of his actual talent.