Is it possible this trait is far less common in women than men?
If the medical profession is any indication, yes. The numbers are such that women M.D.'s work about 80% (or there abouts - I believe that is Canadian specific as well) the number of hours as men do. And btw, that number comes from my feminist wife.
This also fits my personal experience. I've worked with and gone to school with many women. But, none of them were willing to do any programming beyond that in which was required. In fact, none of them were willing to even really talk about anything tech outside of work. For them, it was about the paycheck and nothing more.
But, to comment on my conduct on mailing lists, etc. I don't even read the name of the person that I'm responding to. I just reply to the content. Which brings up a likely cause (studies have shown this in the work-place) of this /perceived/ sexism; differences in the way men and women communicate. Men tend to be quite aggressive when the do so (relatively speaking) and this tends to get interpreted as an attack by women.
This also brings up another point. Namely, that, how arrogant does someone have to be, to think that the work-place will change to meet there needs? This is a universal thing, not just applicable here. Here, it must be said that women must understand that in a male dominated industry, that they'll have to learn to live, etc in it. That the industry isn't going to change for them and to assume that, and complain because that isn't happening is asinine. And before anyone spouts off about me being sexist or some such, I expect the same of myself when I enter a new work-place. The "outsider" climatizes to the new environment, or fails.