AS a former record label owner and recording studio of mostly Punk and hardcore music I say 100% it wasn't different. It was for the majority of people the desire of the same and acceptance.

Acceptance is the reason why anyone dresses (99% of the time) so if you dress this way to make certain people mad your doing it to be accepted by the people who are happy you did.

I just wore plain Levi's, Doc Martin shoes (Still do) and polo shirts. I stood out in the crowd and the pit as "The Old Guy". I was accepted by the tattooed and the pierced just the same as accepted by the main stream. Point being everyone just ends up fitting in somewhere that will accept them.

That's the reason people dress as "Nerds" and coders dress as coders and CEOs as CEOs.