"Maybe this insistence on a male blank slate (a kind of reverse objectification, when you think about it) makes it easier to project oneself onto the disembodied penis, but it also protects men from the potentially scary experience of being turned on by both partners of a heterosexual encounter"
But what about the really rough guys they actually do employ? I find myself put off by a lot of the men (and women) in porn because they're just too disgusting to watch. I don't fully agree with their conclusions. If it was a blank slate avatar that you could project yourself onto, then I think the guys wouldn't be heavily muscled and aggressive, I think they started out as an ideal that viewers could project themselves into rather than blank them out.