That was a great video, and I think it did help him win.
ONE thing that I will give credit to MM for, he hates Trump without having to vilify his voters. He gets the Trump voter, totally nailed it in that piece.
He was the only far left Democrat I know of who predicted and understood the Trump victory in advance. He saw the direction that this thing was going and said so publicly and took some heat over it. He screwed up badly with “Trumpland” if his goal was to actually help Hillary. I assume he thought that the 4 minutes where he explained fairly accurately and concisely why Trump was doing well would be offset by the other 67 minutes of his normal convoluted hogwash. But his 4 minutes made headlines and almost no one bothered to watch the rest. Even many of his followers focused only on the headline grabbing 4 minutes, and it may have helped push many Bernie supporters to Trump.