Just restating that people whose brand is "progressive, but smarter and more practical than all the other progressives who are dumb and silly and impractical and inflexible purists and..." always exist to ensure genuine victories are small, and then take credit for them all. Their role is to take the resources which would go to promote genuine progress, kneecaping the possibilities while enriching themselves.
People in DC are constantly having their noses stolen (many willingly, I know).