"The music of the Nineties"

Just found an old interview with John Zazula. For anyone who doesn't know the name, Johnny Z. was one of the early driving forces behind thrash metal, launching Metallica, Anthrax, Overkill, Testament, M.O.D. and a number of other bands. He was also a convicted conman, and a bit of a bullshit artist at times. However, in this interview from Metal Hammer, May 7-20 1990 (it used to be a fortnightly magazine), he said:

"I think that bands like Jane's Addiction, King's X, Soundgarden, the Red Hot Chili Peppers, Faith No More and Mindfunk will determine the music of the Nineties."

One of the few times Johnny Z. actually spoke some sense? Got lucky? Was still talking shit?

I thought it was quite surprising that a guy who had been so on to it in the 80s also picked a couple of winners in the 90s too, even though the style of music had changed quite dramatically.

I remember reading an article in either Spin or Rolling Stone (pre-Nirvana) which predicted that grindcore would be "the music of the '90s," haha. Yeah, they sure called that one.