Great post though I'd like to add some thoughts to this bit: the professional/business world as a whole rewards and values masculine traits (competitiveness, talking highly of yourself and accomplishments, etc.)

I'd argue those are better classified as extroverted traits rather than masculine traits. Believe me, there are more than a few males that suffer from this being the dominant culture in business (or anywhere). Of course it makes sense though - introverted culture is more introspective thus not as dominating by nature. If there was ever going to be a winner, especially if the business has a focus on sales, it was going to be the one that rewards competitiveness and confidence.

I'd say the next big battle in workplace equality is going to focus on treating introversion fairly. I've seen MBTI's, a kind of personality test, used to define who a business hires and fires despite them claiming otherwise (forgetting that MBTI tests are pseudoscience). You can guess which personality types they prefer, regardless of gender. They want "rockstars".