True. I think the 60s and 70s had the best rock. Jefferson Airplane, The Yardbirds, The Doors, Jimi Hendrix, The Kinks, Credence Clearwater Revival, Cream, The Steve Miller Band, The Animals, Moby Grape, The Who... (need I go on? Because I can). Mid-70s and 80s had the best (technical) metal and thrash metal (although Megadeath has been relatively consistent) and the mid-90s to early 2000s head the best alt rock (Hootie, Pearl Jam, RHCP, etc.) as well as the last good segment of punk rock, before s**t-tier pop bands completely poisoned and overthrew the genre, selling it out to the industry *puffs cigarette, adjusts eyebrow piercing*.
Metal went spiraling down the drain when the emo fad started rolling out crappy alt rock bands that the whiny brats in school called "metal", then "screamo" showed up. Metal became 700000 subgenres because the self-entitled emo kids had to create a new genre for every little group that rolled out crappy music and called it metal. Like what in the actual f**k is "spacecore" or "nintendocore? And have you heard "djent"? I don't have a problem with it, but let's not pretend like it's highly sophisticated instrumentally. They use no more than 5 frets per song. I think Opeth has made a few exceptions to that rule, and there are some slightly varied breakdowns in Meshuggah and Gojira, but that's about it.
As you can see, I could rant about this forever, so I'm gonna stop there.
This generation's music is crap. Point made. Valid meme.