Do they? I'm genuinely asking, since as an outsider I do not know much beyond the online articles I read or videos I watch. I was under the impression that even now there are some MPs who still don't understand or don't care what Leave truly entails. Boris Johnson and Nigel Farage, off the top of my head (with the admittedly limited knowledge I have of them).
There will never be a point when the electorate is completely informed, in my opinion. It is a time-based learning curve - five tears down the line into a hypothetical Remain scenario, you could argue that the UK 'has learned from its mistakes, has understood what it needs to do differently, is more informed than ever, and is now ready to tackle a strong WA that puts country first'.
It'll be like a contract renewal scenario where the player threatens to leave every time the contract is running down - sometimes the club can offer you a better deal and sometimes it'll be better to just leave.