What about Michael Jackson. If he ever does get found out to be a child abuser will it mean that suddenly every one of his songs is dropped from the playcharts? I doubt it.
Similarly if Bowie was found to be a murderer or an abuser or whatever I would probably still listen to his music, it would still be good music. Objectively speaking it shouldn't matter about the artists personal life.
"I'm not saying I didn't love you. Or that I'm happy that you're dead. But my doctor did advise you to keep a rifle by your bed. "