Joe is not playing with a full deck.
The doctor has a point, the precedent has been set. Trump had to do it, so should Biden.
Expect a last-minute switch out for Biden and the real candidate to 'come forward to save the party'. And as Biden fades (literally) into his sunset, any charges which may have been filed against him will be moot since he will 'not be capable of participating in is defense'.
What a game this has become. Is Vegas taking odds on who the real candidate will be, and how soon they will take the stage?