i reject your (Uwe's edit: Master of R)eality and substitute my own, as adam says!
Darn, Nofi can't even get the Sabbath titles right,
he's snowblind!
But not deaf (nor dumb) and thus able to hear (and grasp) the blues roots in this here, some of that stuff could come from a Cream, Fleetwood Mac (Peter Green era), Bluesbreakers or Canned Heat album:
You must really work at your preconceptions, Nofi!
No need to get all paranoid about it, free your mind and the rest will follow ...
It's ok to credit Sabbath with their blues roots, doesn't make you lose credibility as a blooze afficionado!
Next week: Even the Purps did it!
Alas!, destruction of an empty argument is my one and only crime ...