I haven't heard about this. What about Marion Zimmer Bradley?
On the creator's part, I find that you can enjoy a person's work without actually appreciating the person themselves. There are a LOT of entertainers and others that were absolutely horrendous people (Charlie Chaplin I hear about, for example), but you can still enjoy their contributions to the arts and otherwise.
Separating the person from their work and noting the contributions of that work is probably one of the better things to do once you start realizing how flawed many of the people that are significant (not just the arts, in science and other fields) in our culture really are.