Art and Artist?

I read the below article, "Our Woody Allen Problem" a few days ago in "Psychology Today". It is interesting that others have pondered the cognitive dissonance we seem to face when we don't agree with the morality of the artist, but we are a fan of their work. I think a huge amount of latitude needs to be applied. If I was to go through all the films, novels, plays, songs, installations, sculptures, paintings, poems etc. etc. and make an assessment of the key artists involved against my own morals, ethics or even personal philosophy, there would be no one left.

This has been a problem for me since childhood. Growing up in a culture that it has often been fashionable to persecute, traditional circus, it became all-too-common to discover that some icon or other opposed what my family did for a living. Not only did I have to make a decision to either separate the individual from what they produced, but I was often at war with my tastes when a certain prejudicial or gross insult to my people suddenly appeared in a favourite programme, book or other work. 

Looking at the example presented in the Woody Allen  article - and I appreciate this isn't the entire thrust of the psychological argument -  the problem here is that the morality of the artist's life casts a troublesome shadow over the themes of his work. Indeed, this was the same issue I encountered when a gross distortion was made about my people. It ended up leading me to question the validity of a certain individual's work. Even in the realm of fantasy and fiction were they a farce?