I don't think that APUG is necessarily anti-digital. There are APUG forums that allow for digital posts. The very fact that APUG is the Analog Photography Users Group would indicate that the mission is to be a "safe haven" portal for analog photographers discussing various aspects of analog photography. There are plenty of forums for digital photography where general communication that is digitally oriented is better suited. A better analogy may be, perhaps, that it is less than polite to go into a French restaurant and order Chinese dishes.
All I would say is be wary of mentioning the word digital here, APUG tends to be an anti-digital site, sadly in many ways it's become a mirror of the digital anti-film sites out there.