It's all about "intent" LoB. If the girl knows and trusts you, then COF is probably not interpreted as being degrading. The girl is permitting it as a submissive sign of affection, because she knows you're enjoying it.
I guess it would be like a man submitting himself to a woman. For instance, allowing himself to be handcuffed while kneeling on the floor, and forced to give her a deep rimjob. If the guy has a connection and wants to please her, it would probably turn him on to be submissive in this way.
I've been very fortunate over the years to be with (mostly civilian) girls who genuinely LOVE COF. They've asked for it, and were obviously enjoying it as much as me.
Getting back to porn, the same problem is with the "intent". The girls are being paid to pleasure men they've probably not met before and have no connection with. Some of the men are obviously getting off on making the girl feel uncomfortable, hence the wincing at COF.
Was Max Hardcore role playing or was he truly a mysoginist? It's hard to tell from his movies, and there's no wrap up at the end where the girl is interviewed.
If you've ever seen Japanese DOM porn, IMO it's simply disturbing, and I consider myself pretty open minded...