Haha insert clueless teen in NIRVANA or Ramones t shirt here.
Thing is, a lot of people are just casual music fans, and that's fine. Plus as a teen, you're generally just getting into music so it's not surprising they don't know the ins and outs of every band they like. What's wrong with that? If a kid is getting into music, likes 3 Nirvana tunes and considers himself a fan, then he is a fan.
Bullshit gatekeeping only alienates people. This same kid may be sampling loads of bands, and in ten years he may have delved fully into the band. Because he doesn't know their entire catalogue and history of the band, doesn't make him less than you.
The first band I really got into as a kid was The Offspring. I owned Americana, and that's it. I considered myself a fan, and was a fan. It took me years to work through their catalogue, and even now there are the odd albums I've not heard. If I'd have been confronted by some fan in his thirties asking me to name all the songs off Smash I'd have just thought "what the fuck? I like this band, why is it a big deal I don't know all their music yet?".
Some people just have fragile egos, tied into their musical taste, as it is a big part of who they are I guess.
It's just part of the game of being a fan..."Playing The Fan" is a concept that all games and forms of play have. Fans in themselves have their own form of play and game outside of the actual Game they're a fan of, outside the courts, venues and rings.
Sports fans are the best example of this, just look at how they treat new fans and those that are termed "Posers". Posers are in every "Fan Gameplay" where it's "The hero needs an enemy" and picking on the weak, in this case weak meaning the ignorant and less knowledgeable. Even trivia games have this with the smarter "nerds" picking on and making fun of the lesser weak dumber "needs".
This form of play and Game branched out into the music world, look at what is labelled and defined as great and good music. It's a form of rules, as all play has rules.
This is that mindset that Mike Portnoy still has and it's never left him. It's why I say, Mike Portnoy, is still that fan and plays that game of the fan. It's just that the fan in the stands that showed his spirit and dons the outfit of hardcore fan, has finally become the star player in the field.
It's why for me, to truly have unity music there needs to be a band that doesn't give two shits what the fans think and just play the music they want to make without any rules. The rules need to be broken as this game itself has become corrupted and it's not fun to play the game anymore....it's not fun to Roll The Bones.