Eh. As a zoomer (among the older ones) the styles today aren't forged from small local communities and interests like the image. Everything has been seeping into my younger cohorts' brains by social media and conforming to an identity they found online. Personally, it's unhealthy, and only getting worse for the next generations.
Ah yes, the small local interest of a very popular show on one of the 3 main cartoon channels likely purchased from a nationwide chain that was a staple in pretty much every mall.
Concerts and bands. Myspace was a reaction, not a catalyst. Heavy social media use in that era was rare and niche. Hence why this pictured style was not as common as you might think it was.
Most children and teens are terminally online and their styles are symptom, not cause.