We've already seen posts with information from some critical states that it is TOO LATE for them to replace Biden on the ticket, even if Biden steps down! It is only if he dies that he can be replaced on the ticket. So it is most likely that stepping down WILL NOT accomplish what they need. Too me the play is pretty obvious. Focus a media lens on his rapid deterioration. In short time, he just happens to croak. Makes sense to the population, he was deteriorating anyway. Yes, cackles becomes the titled Resident for a bit. Then they can write in another candidate.

Oh wait... if that happened would Cackles be the new candidate by default? Hmmm..... I dunno. Anything.