>>74500119It's literally in one of the posts you are quoting ;)
Now, if you ask me "who started heavy metal?", I would say the first one to play a metal song, but yeah, it could be interpreted as the first band to play metal (regularly).
And no, Black Sabbath being the firsts is neither official nor undisputed, with this very thread being evidence of that.
And Sir Lord are definitely metal. But yeah, their influence wasn't as big as Sabbath's.
Now, if you want to get into the whole "who started metal in the chain reaction thing" then it's no one, because a lot of different bands were contributing all at once to what would eventually be considered to be metal.