People that claim to cut things out of their life completely once the creator does something they don’t agree with, or worse yet when they are only accused of doing something they don’t agree with, are simpletons. They simply do not understand how the world in general works if they think that mindset is scalable.
Almost nothing is black and white when it comes to people’s choices and actions. The world is full of grey area and if someone fails to acknowledge that then they are in for a very frustrating existence.
It depends. For a movie, it probably doesn't matter to me unless there was a really egregious transgression.
If i'm buying a painting to hang on my wall, am I going to think about the artist more than the piece when I see it? If so, that would ruin it for me and I wouldn't enjoy the piece, so I wouldn't buy it.
Of course, sometimes the controversy behind a work is the reason it's appreciated -- not the quality of the work.