I can kind of relate to where she's coming from. Although the situation in the U.S. is wildly different there are similarities with the class issues and culture shock between members of the gay community who are from different backgrounds.

Wealthy white Americans, especially from politically liberal areas, tend to think their experiences and values are universal and can be hostile to outsiders. I grew up in an isolated rural area and when I moved to a college town I got the cold shoulder from people and I broke a lot of invisible rules.

This "everyone hates me because I'm femme" nonsense is not true to my experience. Gay women of all stripes tend to prefer feminine women. This is some sort of British class issue being mistaken for something philosophical.

Like, these wealthy kids have gotten the memo that feminine bisexual women are looked down on as dilettantes and she didn't, so they go out of their way to signal that knowledge to others in the way they dress.