Bernie affectively dropped out previously when he unwisely said he would quit the race just before the convention if Biden had a plurality of the delegates at that point.
What a loser comment to make, and unsurprisingly it is becoming a self-fulfilling prophecy. This is why Trump was smart in 2016 not to take the bait when he was asked if he would accept defeat in the general election during a debate. He knew a “yes” answer would paint him with a loser stain, as it was designed to do.
Yes, Bernie cooked his own goose.
The Dems want to shut the primaries and debates down and prevent Biden from screwing this all up.