What boils down to is you're thinking about this in terms of 'what moral effect will this film have on the general populace' as opposed to people who think of it in terms of 'this is an interesting story and a good role'.
I saw Neeson's quotes on Kinsey with my own eyes.
I don't care that he took the role, but he didn't have to say what he did.
Oh and BTW, films and television are where a plurality of people get their beliefs from.