It becomes very difficult for me to separate an artist from their work when they do something that pisses me off or disgusts me. For example fez might be an amazing game but I would never feel comfortable playing it let alone buying it knowing what a tool Phil Fish is. The developers that worked on war-z could come out with a masterpiece of a game but I could never bring myself to buy it knowing they purposefully ripped people off. It changes for me with extremely high profile bad people. I would find a book written by a terrible dictator or manifest written by a murderer very compelling and would want to read it but only if they are dead so they don't profit anything from it.