Isn't part of the hacker ethos that the code rules? Who cares the age, sex, color, national origin, or creed of the writer? Do any of these factors make for better or worse code? If not, then differentiators based on those factors have no place in the hacker culture.
Any type of harassment needs to be dealt with rapidly, firmly, and appropriately. At the hacker cons I've attended, I've been fortunate to attend sessions with female presenters. I've also had the opportunity to interact with female attendees and found them to be logical, intelligent, and well spoken. I go to such cons to learn, network, and have some fun. Playing grabass just isn't on the menu. Such things are the province of small minds with no social skills. I'm all for harassers getting a swift kick - or several. I have a feeling though that the goons wouldn't be enamored with that idea.
I'm old enough to have been in the military before, during, and after the 1991 Tailhook incident. Hopefully the pendulum won't swing so far in the other direction that personnel are tossed and/or banned based on unsubstantiated allegations. There are very real incidents that need to be dealt with firmly. There are also invented incidents that should result in sanctions against the person making the false allegations.