It's getting extremely common. I mean I live in a decently sized city and I see transgender people all the time.. very often and I also see furries and I guess I can say I've only seen furries at Starbucks but they are employees not people who are patrons. I mean it's just like cat ears and whiskers drown on their face. It doesn't bother me but it's happening and it is there.
I've got a friend who's a school teacher in a Waldorf school, so I know that it does attract a more liberal crowd, but half of her class last year identified as something.
I shared that and my fellow lefties here on the dog thought I was lying which is just amazing to me.
I also happen to know a few people who attend that school who have kids who attend that school anyway and both of their daughters went through a phase where they were trans or gay and although it did wear off, it was clearly due to peer pressure.
The notion that you can change your identity is a social contagion, or if that language bothers somebody then it's a fad.