So basically the problem stems from a lack of respect and propriety found in an ever increasing portion of society? No surprise there. What's not touched on is the other motive for straight women to go to such places: they feel safe from the attention of straight males with no respect for boundaries. Is that ironic?
Is it really the best place though? I mean... If a girl has deliberately gone to a gay bar in order to avoid the plethora of annoying straight men hitting on her, then running into annoying straight men at a gay bar probably isn't going to work in the man's favour... In fact, I would hope that it's more likely that the straight men would be hit on quite a bit and find it uncomfortable and leave... :P
I've always been amazed by what, to me (as someone who doesn't partake of this), seems to be the absolute lack of anything resembling common decency or respect of boundaries that is the bar hookup scene for men: "Women have become sick enough of being objectified at bars that they've gone to a space designed to provide a place for homosexual men to meet and greet. I will internalize the fact that the women who are frequenting these bars likely have no desire to be hit on and would be likely more offended that they are being approached in a space that is the metaphorical equivalent of a neon sign saying "Take the Hint" than if I had attempted to do so in a regular bar. Now let me throw that logic out the window and continue to follow my dick." I would love for someone to explain this to me because in my twenty-something years on this Earth it is something I've never understood.
Here you go: Women go to gay bars because they want to be able to let their guard down. Therefore, a woman at a gay bar has her guard down. QED. "more offended" does not mean "more likely to reject advances" because the entire mating dance is a combative ritual predicated on aggravation and posturing. You can dislike that but it won't change the fact that men wouldn't do it if it wasn't a successful ploy. Don't hate the playa hate the game.