You should read up on why colleges ask about extracurriculars and leadership:
Neither strategy worked [to keep the Jews out]. Finally, Lowell—and his counterparts at Yale and Princeton—realized that if a definition of merit based on academic prowess was leading to the wrong kind of student, the solution was to change the definition of merit...
...Lowell told his admissions officers to elicit information about the “character” of candidates...provide a photograph...personal essays, demonstrating their aptitude for leadership, and list their extracurricular activities.
http://www.newyorker.com/archive/2005/10/10/051010crat_atlar...
But yes, I'm sure you are right - expecting founders to focus solely on their startup is "calculated to keep women disadvantaged". I'm sure that if a man wanted to, I dunno, do a startup without quitting his day job, investors would be totally fine with that.