I'm in support of Google changing the policy, I just think that slandering a culture is unnecessary to get a simple oversight fixed. I'm suggesting that the vast majority of men (and women) are respectful of people and that there are a few who are not that we tend to notice. (selection bias).
Sorry shitty things happen to you because of your gender, shitty things have happend to me because of my gender. Most women are phenomenal people but just like men some are really shitty people.
We don't need to figure out who the biggest victim group is, it's irrelevant.
We need figure out ways to stop it from happening. If it was a man who caused you undue grief and pain then let me be the first to empathize on behalf of the gender I share with people who have treated you with disrespect. No I'm probably not going to understand what it is like to be you in our society, just like you're not going to understand what it's like to be me in our society. If we can get a little closer to understanding than that's a step in the right direction. If we can work together to solve each others problems then that's even better.
If Google+ having privacy with regard to gender will help you to have a better life then I support that. I don't need to understand what it's like to be a woman in our society to know that if you say a trivial change will help you that doesn't affect me in the least then I support getting that feature changed. I'm very much in favor of achieving a more polite and respectful society, regardless of the reasonable steps we need to take to achieve that.