A theory for your consideration Anons.
Joe Biden is dead.
He suicided in order to try and head off the investigations into his Chinese fuckery.
His handlers told him that would save his family, like it did no name's
Unfortunately, Trump has laid hands on one of his doubles and replaced him.
Thus" Welcome back Joe"
The China investigations can now go forward.
New Joe can make a fool of himself on the campaign trail.
They can't say a word.
If they do, they have to admit that new Joe is fake.
That alone blows up the last trust that normies have in the old paradigm.
Not complete, but I think it's something we can build on.