Joe is the human being with the best chance of winning the election for dems in 2024.Joe isn't a viable candidate, he's old as fukk and isn't up for another 4 years.
If you'd vote for him, then whoever the Dems trot out is a viable candidate for you.
You are asking for a coup within the party couple months before the election to install some entity that we aren’t even sure would have a better chance at winning.
Now if Biden were to come out and endorse another candidate people would be on board. Until/unless that happens all of you are just talking abstract nonsense