I think that the argument has now moved on from leave/remain and is now about the sort of Britain we want post Brexit. The vote to trigger Article 50 is going to be voted on because the Government would be acting illegally if they didn't put it to the people via Parliament.
So we are going to leave, that is clear. We now move into the next phase.
What sort of Brexit?
Are you irritating in RL? (light hearted)

but I am being serious too.