Reminds me of a time in 7th grade when I wore a band t-shirt that I had received as a gift. A kid in my class took exception because he doubted that I even owned any of their albums. The kid called me a "poser".
It also makes me think of my uncle who is a very proud labor union member. He gets upset if anyone says anything disparaging about labor unions.
My point is, it sounds to me like people taking honor in being a member of an exclusive club, and they don't like it if other people do things to belittle their club membership, like by pretending to be a member.
I wonder if there is some psychological term for that behavior.
