Biden would be a figurehead, just like Obama, whom the covert cabal that rules the Democrat Party can control.
With enough shenanigans and propaganda, they might just pull off the long-held Democrat Dream: seizing control of the USA, with its enormous power and vast wealth, and converting it into a brutal ruling oligarchy, along the lines of Red China or North Korea--or, better still, something like the Roman Imperium--themselves as ruling oligarchy, of course. (They might have to fight internally for control, like the Bolsheviks in the USSR did.)
Senile is even better than stupid, like obama.
Joe will be reading from a card the whole time.
And i’m guessing on decent sized doses of medicine.