It's not that kind of film. This article is somewhat garbled for some reason. They're not really "film makers" and they haven't been "ordered" to "make films promoting same-sex marriage" They're wedding videographers (seriously, who calls wedding videos "films") and they're suing preemptively to fight a law that would take away their right to refuse service for weddings. I don't know why they garbled it all up to make it sound like they're being forced to produce fictional films about gays because it's messed up to begin with. Business owners have a god and legally provided right to refuse service, and that should go doubly for having to violate your religious beliefs.