Yup, exactly. While they fall over themselves to "out left" the rest of the group up there, they're ensuring that the eventual nominee will be too left to win a general election.
Pete is a pretty solid candidate, and could win the moderate votes (and everything left of moderate when matched up against Trump), but he's getting crushed on not wanting medicare for all and for not kowtowing for the "black vote". Which is something else I find comical - how the DNC treats the entire black population as one mind, that will all flow towards the same candidate as if they weren't capable of thinking for themselves. Talk about offensive.