Clusters of partying straight women flowing through establishments that cater by design to a very different demographic is pretty selfish. The demographic in question doesn't have nearly as many places where they can go and feel welcome behaving however they want to behave in public. If they're suddenly being crowded out of those places by these women who are selfishly choosing that spot because they don't want to get hit on by straight guys, that isn't cool. I don't blame them for feeling annoyed.