Have to say, Bruce, you also do not understand the difference between 'campaign' and 'implementation'. It is not incumbent upon those who campaigned for the UK to leave the EU to come up with the minutiae of how it was to be/would be implemented. They can come up with the reasons why they believe the UK should leave, but it is not, and never was, within their ambit to say/dictate how the leaving process should be carried out. The one (campaign) is quite separate from the other (implementation), and so it should be.
I beg to differ. If you campaign for something, then you should have researched the impact of what you propose, and the likelihood of it coming to pass. Indeed, you should really have a number of different scenarios in mind to reflect different outcomes. That's just sensible. Most of the lead protagonists in the campaign were inside government, so they would have all of the figures to do this accurately, yet they appear to have done no homework prior to the campaign, no homework during the campaign, and now appear to be doing no work after it either.