Look man there are a lot of ways to look at this. Especially how the QB affects line play. Is he making the correct protection calls? Is he getting the ball out quick when he sees pressure? Is he making the right read based on the coverage or the correct decision, etc?
But isolating the OL and looking at their performance alone, they are no where near as bad as many around here are making them out to be. People talk about the OL like it was trash. The 2019 line was bad, but this year was FAR improved. But you would never know that given peoples tone and all the OL hate. But I get trying to move blame from Goff to the OL, makes sense. But IMO our line was league average AT WORST, and I would say top 1/3 of the league probably. You have forgotten what the OL looked like last year if you think the 2020 line was bad.
Still all this being said our opinions on the OL dont mean shit. It's what McVay thinks and how he's evaluating the offensive performance. And McVay obviously feels Goff should have played better and is the problem. He didn't blame the OL. He didn't call out individual lineman like he did with Goff. That should tell you a lot. McVay knows more about offensive football then everyone on this forum combined.
PFF rank #3 (dont necessarily agree but take it for what its worth) ---
https://www.pff.com/news/nfl-final-2020-offensive-line-rankings
Undroppables rank #11--
https://www.theundroppables.com/rankings/offensive-line/