If the artist were truly guilty, they would go through the legal process and be prosecuted anyways, just like Harvey Weinstein was. At that point, the majority of their sales wouldn’t go to them anyways since they would still lose their brand contracts on top of the fact that they would be sitting in federal prison. Additionally, given the fact that many of them, like Michael Jackson, have already passed away, boycotting the art does absolutely nothing to change the outcome of a past event. In terms of the few who are still alive yet have not been prosecuted, given that the sexual abusers that are being exposed in the #MeToo movement are predominantly people who are already in positions of power, a temporary scandal is unlikely to make too much of a dent in their careers anyways. The only way in which boycotting would make a difference would be if they were already facing a losing legal battle, at which point a boycott would delegitimize their image even more. But at that point, they would likely lose in court anyways.