From the Times yesterday:
This is very clearly a literal Dem elite conspiracy that at least to a significant degree isn't even a response to the debate, but to Biden's too-progressive (in their eyes) domestic policies and their lack of access to and control over the White House. The debate was just the perfect excuse for many of these guys. But the problem is that Biden really can't rebut the narrative that has taken on a life of its own. Sometimes he's energetic, but he'll stumble, and sometimes it's really bad like in that BET interview. And this is still THE story even during the RNC right after someone took a shot at Trump, so it's pretty clear that the NYTimes and other corporate media won't end up moving on to something else, but will keep fucking this chicken right up to the election. There's an alternate timeline where Biden is still like a 25% better communicator than he is now where he could probably run against the party elites and the media on this and even turn it into a positive issue for him, but that's not the Biden we have.
I don't even know that it actually improves our chances, but I think at this point it would be best for Biden to step aside for Harris. The media will absolutely try to ratfuck her too, but at least she might be able to counter whatever they're going to hit her on. But she'll need to run as the inheritor of Biden's more progressive policies and somehow rebuke the donors for trying to take over the entire party. Because if she begins showing signs of moderating to please the donors after they sabotaged Biden in a hissy fit that he wasn't treating them like special boys, the party will tear itself apart.