I said there’s significant support on both sides, not insignificant.
I think your confusion is coming from the blame part, anyone who didn’t vote for Biden who was able to has some blame imo. We’re literally talking about a vote to preserve democracy, any subsequent vote is pointless.
But that’s my stance, others may assign blame differently. As you noted, some people might try to put blame specifically on this set of voters, to each their own.
I sympathize, it’s a flaw of our 2 party system. If one party goes off the rails the other one has a low bar to clear and it can stagnate real progress.