And of course, no one is arguing for broad generalizations across an entire gender.  You even quote Damore as saying that.

He's arguing that maybe in a world free from bias, the applicant pool for Google engineers wouldn't be 50/50.  It might be 40% women.  In which case, that should be the long-term goal: not 50/50.

The goal should be to treat everyone as an individual and look at their accomplishments and credentials.  We should also have a goal of treating people similarly through school and childhood so that people's natural interests are encouraged - even if they break typical gender stereotypes.

The 69-77% doesn't sound impressive at an individual level.  And it isn't.  But it is suggestive that if we treat everyone exactly the same, we can easily have more men or more women attracted to certain activities, hobbies or careers.