Guess wrong about why a "moderate" Democrat would not want Sanders to be the nominee.
Moderates want healthcare for all, a dignified life for all, safety, health, and a clean environment, as well as non adversarial relationships with the world community. Same as "Progressives".
Moderates don't want Sanders this time because his loss in the General election will put us further away from those things.
The Progressives seem to be threatening to hold their breath until they turn blue unless these things happen right now!!, which we moderates feel is a strategy guaranteed to bring us nothing.