is faceless guy porn literally just made by and for autogynephiles to ETLE their way into feeling like the woman without thinking about the guy involved? bc i can't think of any other reason you'd want to look at straight or straight adjacent porn where the man isn't a *characterized person*.
I think it's the opposite of your suggestion: it's made for men who are so straight they're actively sexually repulsed by other men and find it difficult or impossible to get off on empathy with the sexual pleasure of other men. Autoandrophilia is more-or-less the only kind of androphilia men like this can experience, they can most easily enjoy straight porn (often can only enjoy straight porn) either through identity-projection/transference and autoandrophilia (i.e. through on some relatively direct level mentally self-inserting into the porn as the male character/actor) or through enjoying gynephilia stimuli in a relatively mechanistic way (i.e. just paying attention to the visual images of the actress and the sounds she's making - I think this would only work with pictures, video, or sound recordings). The more the guy in the porn is a characterized person, the more acutely they're reminded that they're watching a different guy who isn't them have sex with a woman, and the more aware of that they are the less pleasant the experience is for them. If you asked them, I expect most of them would say they don't want to look at the guy cause they're not gay, and I suspect there is a big dollop of homophobia in this mindset a lot of the time, though the more charitable way of interpreting that is being reminded that the guy in the porn isn't them feels bad to them because it's kind of unwanted sexual intimacy with somebody they're not attracted to, i.e. to them it feels a little like being sexually assaulted. I suspect some of them might also dislike being reminded that they're watching another man have fun sex they aren't involved in because their default primary emotional reaction to that is jealousy, not compersion.
I suspect the kind of lesbian porn you'll find a lot of on pornhub, xvideos.com, etc. also caters a lot to men of this type; the appeal of lesbian porn for them is that there's no man involved.