I disagree
He has no point at all
The Democratic establishment tries to pull the same thing all the time. Throw progressives a bone and hope they stick. The most recent example is appointing Keith Ellison to "Deputy chair" of the DNC.. A position with zero actual power. Earlier during the primary, the Clinton campaign fought tooth and nail against every single progressive proposition to shift the Democratic platform to the left the Sanders campaign proposed, then, as soon as it was decided, they adopted the superficial measures that don't actually make a difference and expected Sanders supporters to get on board with "the most progressive platform in history!"... They took credit for the progressive positions that were accepted on the party platform because of Sanders' success when they initially opposed them during the primary.
It's very clearly a charade to garner progressive votes.
They have a serious awakening coming.