I think GP's point is that if finding out about this does indeed ruin it for you, then it's probably a good thing you did find out about it.
If you put importance on not separating the art from the artist, you can't then go around complaining that you're finding out about how shitty your favourite artist is. I personally do separate the two, but in either case I would want to know if someone who has influence on me via their art is a piece of shit; so i may make sure not to let them have influence on me any other way than via their art (or make the decision that I'm too turned off to continue enjoying their art).
