Also why is it that WP should do more to appeal to females but FB doesn't need to do more to appeal to males?
Uhh, because 64/36 female/male user ratio isn't that far out of line. That aside, I'm sure there are top men in Facebook working to pull in a greater number of men while not pushing out their female user base. Top men.
Wikimedia Foundation doesn't neccessarily need to do more to appeal to women and they are not suggesting that they do. But it is certainly in their interest to understand why such an extreme gap exists.