How were we ever to know what a final Brexit deal was going to be unless we voted for it? We couldn't get any deal until we voted Leave, triggered article 50, then, and only then, does the EU rule book say we can start negotiating.
I defy anyone to have claimed that they could know what they were voting for when they voted leave. There were many contradictory statements made by those campaigning to leave, and I reckon any gullible person could be convinced to vote leave if they believed just one of the arguments.
Reasons to vote leave that I've heard from people (in person, online and reported) include:
- I wanted to take back power
- I'm tired of immigration
- I wanted £350M for the NHS
- I don't want Muslims in this country
- I wanted Nigel Farage to be Prime Minister
- I didn't want to leave the EU, I just wanted to protest against David Cameron
- The bananas in the shops are straight
- I disagree with the mandatory integration within Europe
- I don't want a European army
- I think we make a net loss through our EU membership
- I disagree with a specific European policy (this includes many things, but fishing is probably the most notable).
I'm not going argue about the merits or otherwise of these arguments; needless to say that there were good arguments and less good arguments. What strikes me is that this isn't a body of people who know what they're voting for - this is a collection of wildly different ideas, many of which have no relation to reality. You would of course find a variety of reasons to vote remain as well, but I'd reckon they were more coherent and unified. People voting to remain did so because of perceived benefits from EU membership.
Can we really say that the leave voters made an informed decision? I would say, on the whole, that they could not have - the leave campaign was full of utter lies, and ridiculous promises that clearly could not be fulfilled (mostly because the people making the arguments did not, and still do not have the power to implement the policies). Could I even say that voters from both sides could not make an informed decision - again, yes.
Both campaigns were truly abysmal. The "remain" camp failed to make a compelling case for the EU, and failed to even attempt at explaining the role of the EU to the general public, many of whom only really understand the EU through the unbalanced eyes of the Express and Mail newspapers. The "leave" camp peddled a collection of contradictory statements and deliberate falsehoods, which have been extensively covered already. Throughout the whole debacle, the official opposition was engaged in a major skirmish as part of their ongoing civil war, hence contributing little of interest.
You are right in saying that we can not negotiate with the rest of the EU until Article 50 is triggered. That doesn't mean that we couldn't have formulated a plan or strategy in advance. As EM2 has pointed out above, some things could have been made clear from the outset. Membership of the common market and freedom of movement are two notable areas where people from the leave campaigns disagreed, but are actually exceptionally important. It is reasonable to assume that some people who voted leave would have wanted to stay in the single market, based on many statements from prominent leave campaigners stating that we could and would stay in the single market. We are now leaving the single market. It would not have been unrealistic to expect rational suggestions as to, at least, what we are going to aim for with the negotiations, and what we envision life outside the EU to be. We had none of the former, and no official position on the latter (although plenty of contradictory and mutually exclusive positions put forth by various people of varying relevance).
You have repeatedly stated that "it is simple". The problem is that is is not simple. Constitutional law is complex, and particularly so when it comes to the EU. Yet we made a decision based on simplistic arguments, and the decision was in itself simplistic and open to interpretation. To say that we are leaving the EU is as broad a statement as "we're going to fight crime". It doesn't explain exactly what is going to happen, how it's going to happen, or what the ultimate goal is.
By contrast, the Scottish Independence referendum in 2014 did set forth a clear vision for the future should Scotland become an independent country. It wasn't guaranteed - after all, negotiations would be required with various bodies - but it was a realistic vision and a framework for the negotiations, set forth by people who would be involved in the negotiations and who have a reasonable understanding of what would need to happen. It was a proposal that was debated at length in the months running up to the referendum and, whilst it was rejected by the electorate, it was done so by a public who had had the opportunity to scrutinise become familiar with the proposal. Coming back to the EU referendum, nothing like that happened. No firm proposals were set forth, there was no real debate, there was no rational argument.
You can continue to call the decision simple, but to anyone who even begins to understand the complexities of constitutional law the decision is not simple. The fact that the leave camp won by a simple majority is not being argued (although the implications of the remain vote in Scotland and Northern Ireland complicate things). But we are now eight months on from a decision to leave the EU, and all we have is twelve meaningless statements from the government that provide only minimal clarity.
By calling it "simple", you demonstrate only that you fail to understand the issue.