The problem with this argument is that it is built on an assumption that leave means "leave by any means". UK could also leave by starting a war with France, and yet I suspect that wouldn't be an acceptable solution either. And this is not a programming language, if-this-then-that doesn't apply here - to say that logically someone voting leave must have accepted the possiblity of a no-deal brexit is more then naive, there is plenty of documented cases where people voted leave just to say fuck you to the government because they were tired of austerity and being ignored for decades, not because they have any strong feelings either way towards the European Union. Obviously I'm not saying that it's everyone who voted leave, but we cannot apply the "logically if they did this then it means that" here.