Seems something of a straw man argument. Women have been saying that this is an issue for a long time, across a number of companies and industries, which points to a systemic issue, not an individual's responsibility.

Nice slippery slope argument. If you're really so ignorant that you truly don't believe that society on a whole treats the same behavior differently depending on the sex of the person who's doing it then you really need to get outside.

I'd say this demonstrates them being responsible: they're responsible enough to know that sexists like you are going to judge every single thing they do on the grounds of them being women instead of people, and they adjust their actions and behaviors accordingly. People can negotiate their salary aggressively. Women, evidently, can't.