Nothing like a good ole music genre debate. People acting like classic rock was "classic" the day it was recorded and ignoring all the other sub categories those 60s/70s/80s songs would have fallen into. Rock is a broad fucking category including every genre of rock under it including "nu-metal" and 20 year old music is now old, aka classic.

I remember hearing smells like teen spirit on my local classic rock station for the first time in the mid '00s and thinking this will rustle a few feathers. Its securely classic rock now lol. Even if it's grunge.