There are some other things transpiring in American politics right now. But we must note that Democratic leaders are now unabashedly stating what Bernie Sanders supporters said over and over in 2020: the party pushed Joe Biden primarily to stop Bernie.
As an expert in another field, I’ll gladly go on the record refusing to rule out almost anything that is not actually impossible. That doesn’t mean I think it happened, or even that it’s even slightly likely.
If you ask your experts “is this possible” you are not getting your money’s worth.