Because it translates to:

Me - Women have to fight for themselves before they can possibly fight for other people (the oxygen mask point)

You - No, we all need to fight for everyone.

Given that women have no history or proof of many 'other people' fighting our corner, we'll attempt to do that for ourselves and when we're not the underdog, we'll come back and help you guys. (Or - given the distribution of power, men could do more to help themselves? )