I feel pretty confident that I could describe to you a case (either real or hypothetical) where you would reject an artist based on their personal behavior, rather than their art. You would find it quite difficult in such a case to separate the two.
So the question is where to draw the line, and everyone answers that question differently.
I myself am far from innocent of this. For more than 20 years Polanski has been, and in many ways still is, my favourite film maker. Repulsion, Tenant, Chinatown etc. are masterpieces of cinema. But they are inherently, even on plot level (at least in the case of Chinatown) intertwined with the horror of his actions. There is no virtue signalling in my personal connection to his set of work (who would even care anyway), but for me to continue pretend I know nothing about his behaviour or that it doesn’t directly inflect upon his work would be deeply dishonest.
Polanski R is not the same thing. He drugged and raped a child and was defended for decades by people who ought to know better because of his directorial genius. I don’t dispute that genius. I just can’t watch his movies again without feeling a little sick.
All of this to say, judging Polanski for being a monster is not the same as judging PO’b for being a jerk. I reread the Aubrey-Maturin novels every four or five years and they enrich my life on every occasion. And I don’t feel even slightly bad about it.
(Disappointingly, I did lose an argument over a big family dinner several years ago when it turned it that tracklement is a neologism. Imagine my embarrassment!)
There’s artist with whom we can “forget everything else”, then there’s not. Where one draws the line, well, I suppose that up to one’s own discretion, but I would recommend offering a serious thought on where oneself draws the line.
While writing this, I dug out a Reddit thread about the book, where one of the participants (YakSlothLemon FTW!) hits us with Wagner. Well, yes, game over. I'm not a fan of that sort of (to my ears) overcooked opera, but if you like it, play it. The dirtbag isn't getting any royalties because he's good and dead.
Interesting example. There is more credible evidence of parents of “his child friends” being in it for a cash grab than actual wrong doing.
Evidence was your bar there.
Dismissing all the evidence requires wilful ignorance and kind of compartmentalisation I was talking about. You are just cherrypicking facts to fit your world view, or more likely, you let someone else to do it for you, as so many people are today. And that is a very dangerous road to take.