Over on Braister this bit in the comment section i think adds much more contex to Miller’s politics
Troublesome as the so-called Religious Right can be, they’re generally a pretty clumsy bunch. They swing a club. ‘Liberals’, on the other hand, use a scalpel, and only after they’ve applied intellectual anesthetic. Any pain is felt much later. This makes them much more dangerous censors. Especially since most artists tend to be vulnerable to their anesthetic. The most palpable threat to free speech these days comes from the secular political left. Janet Reno, Paul Simon, all those little ‘politically correct’ fascists that haunt our universities, preaching that the purpose of fiction is not entertainment, but rather indoctrination. These shameless, lying, whiny scumbag baby boomer, sixties-generation spoiled brats who think they serve society by rewriting history and trying to unravel our language…they represent a much more effective and successful effort to shut down free speech and the free press than the Bible-bangers ever have.”
Frank Miller, 1994.
so it seems Frank is in more of the Heinlein styled mode of libertarianism