Also Kurt Cobain, as noted by Rick Beato:
"It doesn't matter if people know what they are doing, if they can just do it intuitively"
John Lydon, aka Johnny Rotten, of Sex Pistols (amongst others) often said his Punk movement was as much a protest against the Prog Rock musical elite as it was a movement against other norms. He would say that you didn’t even need to learn to play an instrument to be able to make music with it.
I'm really surprised nobody has mentioned Paul McCartney yet.