Some of the best advice I was ever given was "trust the art, not the artist."
The best advice I've ever given myself: there's more art than I have time to deal with, anyway. More good art, even. In fact, there's so much to do between music, TV, movies, and video games, that I'll never get to all the *good* stuff, let alone all the mediocre stuff. So if an artist/company/whatever sticks their neck out and gives me an easy excuse to cull them from my to-read/to-listen/to-play list, I feel that they're doing me a favor.
I don't need to see Ender's Game. Just like I don't need to play Zynga or EA games, or see Mel Gibson movies. Sure, I'll miss some good stuff (well, probably not in the case of Zynga...) ... while I'm enjoying other good stuff.
Orson Scott Card is free to talk all he wants, and I'm free to walk. And neither of us goes to jail! That's the beauty of free speech!
--Jeremy