06:28 - Apothecary You're probably right for NWOBHM, but I would say that was because they were mostly influenced by Priest, not Sabbath. I think those bands very much started two divergent roads in metal, but both were the unofficial "pioneers"
05:24 - deadone That's historical revisionism. Bare in mind most NWOBHM metal bands didn't do " dark, heavy." Most speed/thrash wasn't that heavy either. Indeed Sabbathian heaviness was kept alive by doom metal.
05:16 - Apothecary Also, I wouldn't call Zeppelin JUST hard rock/proto metal either, they were also quite bluesy and very folk-influenced, so there's also that to consider as well
05:13 - Apothecary I would consider Deep Purple and Zeppelin as PROTO metal at most. It was really Sabbath that developed the dark, heavy, riff-driven style that is now essentially the core staple of the entire genre
05:05 - deadone In other news, nothing gets one out of the sadness from attending a funeral like thrash fucking metal. It's that ugly kick in the face that one needs to get out feeling sadness.
05:03 - deadone Even Sabbath didn't play "pure heavy metal" - lots of heavy blues and rock n roll here even on early stuff. In any case Zeppelin are far more metal than half the shit that gets labelled metal these days.