Once upon a time, computer programming was a job for women, and not for men. So, based on that period of history, we can equivalently suggest: Maybe we don't need more men in software?

(I do not believe either suggestion, not for a second. And I am disturbed that people are so ignorant of history. Both the women subject to stereotype threat and the men suggesting it's a non-issue are making this same kind of mistake. So, instead, I'd like to point out that women are awesomely smart. So deal with it. Please.)