It is curious. Biden is a terrible candidate with a ton of baggage. But he is the best they have. Which is why, in desperation, they had to try to smear Trump with impeachment.
This could be the Democrat version of the Republican nomination process in 1996. If they think there’s no chance in hell of winning, why not just nominate a useless old fool instead of damaging the future prospects of a younger candidate?
For those of you who are fans of "The Sopranos": Joe Biden is the Democrat's version of Junior Soprano. If the DNC is able to drag him across the finish line, and he somehow wins the presidency, they will allow him to think that he's in charge, and he's running things. In reality, Biden would be nothing more than a figurehead, a "lightening rod" to take the hits while the deep state remains in the background calling all of the shots.