Honestly to me that feels like men looking for something else to blame for their own more deep seated issues. The problem for me is that the cult of machismo seems to just keep pushing to ever greater heights, maybe its linked to Reaganist capitalism becoming so dominant in our culture, maybe the net makes it worse? either way there seems to be this obcession with pushing a sociopathic teenage mind-set as a life philosophy that tends to lead to resentment against woman and a desire to belittle and control them, even if that's only via viewing porn.
Really the same material could be viewed by different people in very different fashions, to one person it might be just sharing in the eroticism of seeing a woman sexually aroused to another it might be "look at that dumb whore humiliating herself".
It probably doesn't help either that a lot of people still have a strong sense of guilt about having sexual desires at all let alone more fetishistic ones. As with a lot of addictions I think a cycle of shame is probably a big issue, the guys who gets drunk to escape the shame of drinking.