Um? What?! Of course they do and do it all the time.
They hold up abortion as a secular sacrament. Movies like Bella, Juno, Waitress, and Knocked Up were exceptions and were lambasted by the critics because of their message not the quality of the film.
Homosexuality is held up as good and here it is impossible to find one film that says and/or gives a stance that same sex cohabitation is a bad, (OK except for comic or “stupid” characters).
The idea in films about Marriage for life is used as a joke. Even with Disney the family is not intact-quickly name one Disney film where either the mother is not dead or not evil.
The problem is not that the people do not want Christmas movies but that the “A list” movie makers lack the understanding and sensitivity to make one without having their tongue firmly planted in their cheek.
Mark Shea did a very good write up of this attitude here.
Where’s the Frank Capra of this generation? I know he is out there but he can’t get the funding.