Working class people who, especially, wanted to control immigration were called bigots, uneducated, stupid, racist, etc and were ignored. Result is that they voted for Brexit. No, that didn't change anything because this was ignored by the establishment (both Labour and Conservatives) and that is still festering with the resulting rise of the Reform UK party (of Nigel Farage who's celebrating with Trump in Mar-a-Lago right now).
Here's a better analysis of the Brexit thing which was posted here yesterday. It was mostly decided by the fact that the pro-Brexit people had better marketing campaign.
Your "analysis" is from someone involved in the Brexit campaign. Of course Cummings is going to say he was amazing at marketing.
Another argument would be that Vote Leave broke campaign spending rules. In countries with legally binding referenda, that would justify rerunning the referendum. But in the UK it was "only advisory".
"Better marketing" campaign is another word for saying that they understood people's concerns better and were thus able to use that to their advantage instead of insulting the people they were supposed to convince (as the Remain campaign did). This is what Cummings did to win.
> instead of insulting the people they were supposed to convince (as the Remain campaign did)
Can you point to any examples of this? I don't think the official Remain campaign did anything of the sort. Insulting the people you are trying to convert is a poor strategy, which is why I don't believe they did it.
When you say "were called bigots, uneducated, stupid, racist, etc", what I think happened was that the Leave campaign alleged that that was what the Remainers thinking/saying and it gained traction.
