The stories live on their own. They left his mind and are no longer his. They live in your mind now and are yours now.
If it makes you feel better about them being there, tear out or paint over his name on them. And continue enjoying stories that are good.
I believe in death of the author. People throughout history were all sorts of awful, but that doesn't mean they didn't have some good thoughts too. Don't throw the baby out with the bath water.
I've never heard it articulated quite like this before, but you phrase it well.
Men like this absolutely deserve to be condemned and shunned for what they have done, but that doesn't also erase the good that they did before -- nor does it preclude them from ever doing good again.
Not all humans are bad and destructive, nor is the collective human race universally destructive. We have saved species from extinction and made great strides to protect ecosystems. Don't damn the lot of us for the crimes of the worst of us.
Sure, but there's a reason that scabs used to be beaten and shunned. Solidarity means everyone, and the consequences for breaking it need to be high or it's too easy for the bosses to pick people off one by one by offering them bonuses for ratfucking their peers.