Consider this: most hollywood stars (James Wood and some others are notable exceptions) are not particularly bright. They get caught up in the hollywood hype but have a deepseated sense that what they do doesn't really amount to much in the cosmic sense.
So to feel more relevant and in particular to impress the other shallow leftists that inhabit hollywood, they veer far to the left hoping some of the mythological talent of elitist leftists artists of the thirties (e.g. - like Picasso, Neruda, etc) will rub off on them...
They just want to get noticed, which I have now done and have put this clown on the list of artists to avoid along with the rest of the no-talent irrelevant clowns who think they are part of some "vanguard", of course they are actually promoting an elitist "paradise" which treats them with the special privleges, which as artists, they deserve ahead of people who actually work for a living...