Kotaku - Nerds and Male Privilege.
The idea that perhaps the way women are portrayed in fandom is aleetle sexist is regularly met with denials, justifications and outright dismissal of the issue. So regularly, in fact, that there's a Bingo card covering the most common responses. Part of the notion of male privilege in fandom is that nothing is wrong with fandom and that suggestions that it might benefit from some diversity is treated as a threat.
But what is that threat, exactly?
Secondly, and more importantly, it's not so much the games that are the problem so much as the gamers. The comic book shop example given is an example. I bet the level of grief (and misguided White Knighting) that female gamers on CoD is horrific.