Think this is a good point. I distinctly remember a “rock and roll is back” narrative being pushed by MTV in 2001. I think part of it too had to do with MTV’s finally deciding to hedge the bet it made back around 1997 when rock was basically dropped overnight for the Spice Girls and boy bands (while also not wanting to admit it possibly made a mistake, which suddenly playing newer material by the old artists would have shown).
It’s all confusing though since 2000 was an incredible year for rock music, especially by established artists. Plenty of albums (in my opinion) were coming out that were much better and much more exciting than anything The Strokes, The White Stripes, etc. ever would do. I guess latching onto new bands that were generating buzz locally made for a more exciting narrative.
This is a thought I just had today so it’s probably total garbage, but I wonder if a small part of the reset with new bands was a reaction to the violence of Woodstock 99. Like a, “Ok, rock got dumb and destructive, but look, bands are bringing back the classic style that you and your parents used to love” kind of thing.