When I was first learning guitar (around 13 years old), I was enamored with the wild reckless noise and feedback that Jimi Hendrix and other psychedelic guitarists were doing, as well as the avant-garde weirdness of The Beatles' "Revolution 9" and even John Lennon's Live Peace in Toronto 1969 to a certain extent, which I had on DVD around that time. And I noticed with some frustration that most mainstream rock and even metal music in the early 2000s wasn't really doing that anymore- and my guitar teacher was a bit snobby, and didn't think it was important, more or less concurring with other guitarists at the time that making wacky noises didn't take any "real skill", although those weren't his words. (Not that I had a large enough amp or any pedals to make that sort of noise, although I managed some things on a guitar with microphonic pickups and some found objects.)
It's really only been very recently that I've found rock bands from the '80s and '90s that scratch that itch. Noise rock/pop and alternative bands like Sonic Youth (of course), Nirvana, Smashing Pumpkins, The Jesus and Mary Chain, The White Stripes and several other more obscure bands, including ones from the '60s and '70s, are filling that void and making me feel sorta vindicated. Evidently the screeches and wails of Hendrix didn't live on so much in classic rock and mainstream metal, but found it's way into alternative.