Stop going to PAX and giving these assholes money.
I was a fan of Penny-Arcade back in the day, and I thought they were awesome and did "Gamers Right" for various reasons. Then... Then Dickwolves happened, and more and more sexist bullshit came out of the owners and runners of it.
Don't support it.
Don't give them money.
Just... Stop enabling and encouraging it, even indirectly. It hurts people, it hurts gamers, and sends horrible messages that this kind of behaviour is acceptable and encouraged.