I dunno, I guess when it comes to this sort of thing I can only approach it as a listener of music, or viewer of films or whatnot. These people aren't my friends. Unless they are literal child molesters or mass murderers or something, I see little reason to get into it... because... again, they're not my friends. They're just people who do some interesting work. Or did (in the case of those who are dead now, like Lou Reed).
I fully realise this flatly contradicts my open loathing toward Bono, who, ironically enough, is probably a perfectly pleasant person in one-on-one situations.