The remain campaign undoubtedly made misleading and unrealistic PREDICTIONS about the post-Brexit world. Political campaigning is predicated on predictions and it's up to an educated electorate (or should be) to distinguish between realistic projections and far-fetched extrapolations based on ideological bullshit. That's the name of the game and 'twas ever thus. What Johnson did was to tell a deliberate lie, which he painted on the side of a bus. It was a lie and he knew it was a lie. That was no prediction. It was a stated false fact, writ large. Defenders of Boris appear not to be able to tell the difference.