While you are right that the referendum was advisory, all the main parties said they would abide by the result and voted overwhelmingly in parliament to trigger art 50 for us to leave, trying to claim it wasnt legitimate is remainers last resort.And International Convention says that Constitutional Change requires at a super-majority (51% of all eligible voters) or at least a 2/3 majority of those who vote in a binding referendum.
Our pseudo-democracy has allowed a non-legal advisory referendum to get us into this current pickle.
Hey Ho….