Biden pulled a Ruth Bader Ginsburg. Instead of declaring that he would not run for reelection early on, we now find ourselves in a situation where the end of American democracy is not only possible but probable.
EDIT: Downvote away but if you think a Trump win isn't the end of American democracy, then you are delusional.
I think its only a RBG situation if Biden dies soon.
It's more of a Diane Feinstein situation, where everyone can see the dementia progressing, but everyone around them has a vested interest in keeping the status quo.
I don't think I'm capable of articulating just how fucked up it is that that level of nuance is even possible, let alone backed up with recent examples.