I hated grunge. Loathed it. I never cared that Jeremy spoke in class today, or that something or other smelled like teen spirit. If you want poorly played instruments and lousy vocals with feeling, listen to punk: THAT rocked.
The Big Boys/Poison 13 in turn inspired Green River/Mudhoney (and out of them a side project called Monkeywrench was formed). The Seattle sludge comes from this.
Of course Poison 13 covered songs by 1960s Pacific Northwest band, The Sonics (songs like Strychnine and I think Psycho).
In an era (mid 1980s) when punk was going to hardcore, thrash, and speed metal, it was really radical to play SLOW songs (like Blank Generation and When I Was Young) and blues covers (Spoonful...).