I believe the issue is more that cultural attitudes about gender and sex promote this kind of thing. Make sex a stressful mystery that only "the beautiful manly man" can do and it is no wonder some nerdy guy would rather not bother, retreat the basement, and do it himself. Games and porn don't harass or reject him. And also, this ignores what "damage" it is doing to girls who can fall into a "Madonna Whole" cycle getting mixed messages about staying pure and being evil for tempting men.
And another thing, what is wrong with nerdy guys going nuts on porn? If they aren't bothering anyone, who really cares?