It's a clever political tactic coz a 50 year old white male middle manager at Microsoft trying to become a board member on an open source foundation would face a lot more hostility than a 20-something girl who pushes all of the diversity buttons.
It mirrors the rather successful marketing strategies for a string of movies including Ghostbusters movie and Barbie, among others. i.e. "There's a certain kind of person who doesnt like our latest corporate offering...". Who wants to be that person?