This whole discussion seems ridiculous to me. Admittedly I'm one of the more junior members of the aviation community, at the age of 27, but I have never seen even a hint of sexism in any of my 500+ hours around airfields and in airplanes. I'm an engineer, and I can say the same about my workplace too; the younger generation seem entirely blind to peoples sex in the professional environment, and at least in my office, the female engineers seem to get preferential, rather than negative, treatment from the older generation.
Indeed, in aviation I have only ever met one person who was immediately rude, arrogant, and presumptive; and that was a female instructor at our club. Oddly enough, I haven't judged all women pilots based on her.