@Olivier5,
Maybe I don't understand the point you're trying to make.
Do you think this wouldn't have happened for Warren? Do you think the coalition will fall apart without Bernie specifically or just without a figurehead?
If members of the movement (I wish we had a name...) are discussing priorities and next steps that don't include Bernie, it sort of makes a statement.
Local networks have formed. Communications independent of Bernie take place regularly. These meetings planned post-primary and pre-convention were not scheduled via the Sanders campaign.
But, things that we can watch unfold negate the need to argue.
We'll see.