Hindsight is a wonderful thing though isn't it. I didn't vote. Why ? Because I could not reconcile what should happen with what could happen. What could happen did happen and we are left with the current shitshow. What should have happened is that there was a properly researched and funded plan in place to address the gaps that leaving the EU would bring to the fore. An example of this is tradespeople. I live in North Wales and there were plenty of Europeans (particularly Poles) working in industries where there was a shortage of trained British workers. Immediately the results were known there should have been a properly executed plan to train young people to fill these roles. never happened.
In addition to that, we could have hoped that the EU would have acted in a responsible and mature way and actually eased the transition in terms of future relationships. They didn't. They went out of their way ( like a partner on the wronged side of a divorce) to make things as awkward and difficult as possible. You can argue that 'We left, that was our decision', but it didn't have to be that way.
I think it is over simplifying things to assume that anyone who did, or considered, a vote to leave the EU is some sort of brainless knuckledragger. It isn't that simple.