Rock needs to be dirty and hot, right? Absolutely, and then some. Gazillions of bands did a helluva lot of that back in the ’70s and early ’80s. You know, those riffs that sailed on an abundance of groove, fuzz, and a gluttony of wah-wah. All of that filled with laid-back notions of blues rock and psychedelic soundbites.
One could acquire that stuff on cassettes1) and vinyl that had that tendency to quickly disintegrate. And this added to this woozy scratchiness that most remember so well.