So did rap but both had their roots in the 70s. Absolutely accept that both also evolved significantly in the 80s but I don't really feel that "counts" somehow. It's where things started that's important in this count, not when they diversified.

Well, in that case I'll stick with Pratchett and Iain Banks for my counter example then 😁 there's always something

I started in the 80s and I cannot tell you the profound impact that has had on my life!

If we're getting down to individual authors then that's a bit too specific IMO. Pratchett's work in the 80s wasn't that great, for me. Banks was tho.

Hang on. For metal, you said it was about when they started. Now for authors, it's when they published their best work? Make your mind up!!

Most people don't start growing flowers because they think, "nice bulbs".