It's precisely why I try (read,TRY) not to know anything about performers in ANY entertainment medium I enjoy, outside of what they do on stage/screen/etc. If I like your music, but hate, say, your politics, then from then on, when I see you on stage, I'll also be thinking that I hate your politics. So... I try to just enjoy what performers do for a living to entertain, and don't read interviews, or anything else. Then I'm blissfully ignorant of the bitchiness, and still get to enjoy myself!
Those shows like Inside Edition, etc. that just seem to thrive on what entertainers do off stage? Can go suck a dick.