Orignality is worth much more than quality. you dont see the mc5 the stooges or the 13th floor elevators on the punk thread even tho they were punk long before punk happened. They had the balls to play like that in the middle of the bloated prog hippy era when they would of been derided for it.
Same with venom, they were the trailblazers, if they hadnt done their thing you can forget about norway in the 90s. I remember seeing venom t-shirts as a kid and going "what the fuck is that!?" and hearing under the sign of the black mark for the first time while all me mates either pissed themselves laughing at it or just looked sponky eyed. You could probably say the same for darkthrone i guess. That counts for more than those who reaped what the innovators sow