What got me into Jah Wobble definitely isn't post-punk. Or maybe it could be argued to be post post-punk, lol. I have meanwhile posted one or two of my own here, "check'em out!"
The story: He was pretty spaced out back then - in a way that is independent of drugs - and told John Lydon that he had a radio in his head. Not literally of course. Lydon wasn't impressed, answered something dismissive/derisive. A while later JW met Holger Czukay who answered "Yeah, me too!" So he felt understood.