I understood him to mean that Democrats were more interested in appealing to Liz Cheney as Republican lite, rather than advocating vigorously for the working class. They take money from corporate interests, and then pretend they don’t protect them. They didn’t do enough to address the problem of inflation, and American workers were angry.
She and Biden had four years to demonstrate policies that help the working class. They did so little that the working class supported trump.
That’s the concession: the built in support for corporate agendas, since that’s where Democratic money comes from. You don’t need to put it in your platform when it’s obvious from your actions that “the economy”, to you, means the board room.