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.
I’ve literally never heard anyone say that moderates unifying behind Biden was a conspiracy theory. It’s not only patently obvious but so utterly mundane it doesn’t even make any sense to deny. I’m almost certain news stories at the time specifically said they dropped out to unify behind Biden and counter Bernie.