I would guess that he was maybe hoping (foolishly) to freak out the Dem leadership and elected folks to wake up and break from what they always have done. Which is just always bow to conservatives and act like "bipartisanship" and "norms" are sacred above doing shit their own voters want/need. They saw the way Bernie and people like Stewart are able to get people jazzed-up and even inspire. And they went out of their way to undo all of it in the name of moderate/centrist can kicking. So done with the "we hear you and see you, but our hands are tied by insert excuse" excuse. At this point anyone that thinks Dem leaders are "fixable" and can in any way be trusted to fight for anything are just in the worst levels of denial.