I've said before that the expectations my generation of GIs had when we raised our right hands were shaped by two main forces: the flood of Vietnam movies that came out when we were in high school, and Aliens.* Given that the people who are now running things at the Pentagon went in about the same time I did (!) I can't help but think that the latter had a lot to do with the fairly smooth acceptance of women into combat positions over the last few years.
So it's just bizarre to me that a quarter of a century later, with a solid history of women fighting in Iraq and Afghanistan, this kind of thing is still happening. And because video games will probably have just as much to do with shaping the current generation of recruits as movies did with previous generations, it's going to be a problem on the battlefield as well as the web.
*Whether it's a good thing or not that recruits report to basic training with their expectations shaped by popular entertainment is a separate issue. Just accept that they do.