Earlier quoted context omitted.
I've heard it claimed that hardcore punk was the last American youth subculture, I think street skating qualified too. Those were pretty much the end of it though. You can't have a youth subculture that your parents drive you to in the car.
Some of those hardcore punks were driven around to the sound of Rolling Stones, Led Zeppelin, Lennon’s “Imagine”... Elvis was utterly scandalous in his time (“those hips, what filth!”), and I bet he was on a lot of radios when Malcolm McLaren and his protégés were growing up. Any successful culture, be it sub- or counter-, will eventually be swallowed by the mainstream. That’s because a culture is such only if it get…
I was one of those hardcore punks and I think you greatly overestimate both the level of parental involvement we had in our lives as well as our parents' musical tastes.
Hardcore as a youth movement didn't get swallowed by the mainstream, it just ceased to exist.