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.
In general, I agree, but I'm not sure that it's that much worse than many other facets of the internet. Although I don't think the comic book example was useful, since dragging someone somewhere they don't want to be, and then getting them involved in an argument over the contents of that location is a pretty stupid idea.
Beyond that, however, it's disappointing how many women have to put up with idiot gamers. But can you think of an example of where you could have large numbers of teenage guys who can act anonymously, with a smaller percentage of females, and not have the guys act like complete asshats?