Those articles are out there.
The key differences are Trump is the popular candidate. He is who the GOP electorate wants and who the GOP runs on.
Biden is not a popular candidate and not who the Democratic party electorate necessarily wants: instead his whole candidacy and presidency has solely been not being Trump. This condition is fully transferrable to any candidate with support of the party.
So the ramifications and implications are wildly different.
They want a competent president. Biden has been showing these signs for quite some time to a lot of resistance towards anyone willing to acknowledge it. But now? Shit I’ve seen hard leftists express willingness to support Kamala Harris so I think people are mostly on board for not-Biden in general.