He's right. In a declining capitalist state like the current US, workers want change. In the absence of a genuine working class party that correctly blames capitalism and the capitalist class for a revolution, you get a "radical" capitalist-funded party that at least points the blame at someone — marginalized people.

The dems only offer to preserve the status quo, and no one fucking wants the status quo.

Get organized. Liberal democracies in the imperial core historically always slide to fascism.