...and I find it predictable that you feel that's relevant to the movie.
Just a guess (whether it's right or wrong) is that it wouldn't matter one way or the other if he commented on his dad's views. It does't hinge on the bearing of the film (what he thinks of his folk's view).
He isn't one to talk about what his family says or does in public (on any topic), so I really don't see the point.