I think it's a poisonous and reductive mindset to have. You can separate art from the character of the artist. If you cared about everything everyone has ever said or done in various stages of their lives, you wouldn't have much left to enjoy or appreciate.
I do consume art from outside this bubble but more to satisfy academic curiosity than pleasure.
Its not poisonous nor reductive to decide not to follow an "artist" because his "art" is repulsive.
Sorry, that just doesn't make sense to me.
I'm only on this earth for so many years, and the number of words I can shove in my eye holes is finite. Dan Simmons thought it was a good idea to write that, and publish it on his own blog. SF is the kind of genre where you run the risk of getting hit with a big bolus of the author's politics at any time, and why would I drink from a well somebody's already pooped in?