I would argue that it is not ethically possible to separate art from artist when consumption of their art can provide them any material benefit. If they’re dead, it’s a lot less likely to be problematic. Plus, there are plenty of great artists and writers out there who are not TERFs, nazis, or generally awful. Refusing them patronage is a double ethical failing of both lending aid to awful people and refusing to support smaller artists who have a harder time making a living when competing with the ethically bankrupt.