If Biden 'steps down' because of dementia it gives him a nice spot in history that ignores the fact he has no chance of winning and that democrat primaries were a sham. It gives his fellow democrats a way to choose someone else without looking like they're manipulative jerks who don't care a wit about the votes and voters of their own party.
The big problem is Kamala - she'll have to leave with him or she might choose to run rather than giving it all up for Gavin. That has to be worked out.
Lucky for democrats that no matter how convoluted and insane the excuses will be, their butt boys in the press with buy any story dems put out. The advantage of have a homegrown state Pravda instead of a free press.
Biden’s team is probably fielding “excuse stories” from the media, as we type.