I think you've got something here, at least part of it, since the basement dweller thing dovetails nicely with that tweet on gamers treating women kindly unless it "threatened" their masculinity by being better at games than them (which they tie their masculinity to). To their self centered minds if they are not "more" masculine than a trans fem the existence of one, and the "acceptance of trans men are men" is an attack on their manhood that they themselves question in the quiet hours alone.