My grandfather was a classical musician who didn't think rock was legitimate in any way. My dad likes classic rock but couldn't name a single tune from the grunge, alternative, indie, post rock, pop punk, emo, or hardcore eras. And I look down on Gen Z music as having no value whatsoever. The difference is I'm right and everyone else is wrong.

If you want to make a case about why a specific band is overrated you can. Like I wouldn't listen to Bob Dylan or Billie Joel. There's plenty of goated famous stuff I don't really like. But the canon must exist for a reason. I don't think it was just the bands Jann Wenner pulled out of a hat. With this much distance and time, the market has spoken and Classic Rock is a legitimately popular and critically acclaimed musical era. Hell, I argue all the time that The Eagles and Rolling Stones are overrated. But I can say that convincingly because I also stan for The Beatles.

In other words Bona Fides matter. If your starting point is your favorite band is Velvet Underground but you don't like Led Zeppelin that's not a strong position to combat from. Meanwhile arguing that the Stones suck as a die hard Beatles fan is pound for pound. You have to go pound for pound. You're fighting in the wrong weight class. You're featherweight and you're going after a heavyweight. You gotta bulk up son and come correct.

(http://www.autoadmit.com/thread.php?thread_id=5914475&forum_id=2#50203672)