You're nitpicking. My stance is that they're both fears and they'll both result in more fear, which is counterproductive to a society that is trying to reduce sexism.
In this situation, it's not incumbent on the women to educate the men. It's a bar, or a party, not a classroom. The men are being told about the problem, and need to get their act together.
Maybe the way to do it is to hold a class on sexism and behavior at defcon.