And for the record, you're contradicting yourself. Earlier you stated that you wanted people to get over judging others based on their dress and now you're accusing subcultures of being fashion obsessed and, by implication, shallow.
No, actually, all I did was state a fact - that in my experience, meaning out of the hundreds of people I've known in my life, only those that are younger than 21 or so
or are to some extent shallow go very far out of their way to make an elaborate statement by their appearance (eg mohawk, tons of patches on the jacket, ripped jeans, piercings, etc).
This is not to say I don't know exceptions to the rule. I have close friends who spend lots of money on looking a certain way.
This is not to say I don't choose the clothes I wear to look good, just that I don't go out of my way or spend lots of time/money to conform to one particular "look" because in my experience being part of the "same subculture" as someone else has fuck-all to do with whether I'll get along with them. YMMV.
Right now I'm wearing a Dinosaur Jr. shirt and army surplus camo pants. I do own a black trenchcoat. I wear prescription sunglasses at night when I go out. I am not "above" fashion, but I do not make any effort to meticulously wear an easily identifiable uniform so that people can look at me and say "Oh look, a goth/metalhead/indie rocker/whatever".
My main problem is with "crusty kids" - you know, the homeless "travelers" who dress very punk rock. As someone I met on the street said when I was in San Francisco a few months ago, "They ask you for spare change while they've got $200 worth of metal in their faces."
Also I have had bad experiences with fashion-goths, because man, they really do tend to be extremely shallow, in every city I've ever been in over the past 14 years.