My preference is strongly however to attempt to understand (and have visibility over) the factors that are influencing people rather than retreat behind a veil of 'we can't possibly understand it' ignorance.
I would hope that a branding specialist would have no trouble understanding the Brexit result. It doesn't require deep analysis. Remain mounted a campaign that was defeatist and based on fear: "ok, our attempt to negotiate resulted in nothing at all, but we must still remain and obey Brussels because if we don't our friends and allies will destroy our economy."
As a logical consequence, they were effectively arguing that there was no future for British democracy, because the trend over time has always been for the EU to take more powers out of the hands of democratic local government and take it for itself.
That's a terrible brand. Leave campaigned on a better future with "take back control" as their byline.
You don't need conspiracy theories about corporations with mind-control machines to explain what happened next.
I think this alone serves to demonstrate 1) your assertion about what caused the Brexit vote is a gross oversimplification 2) Why many people still won't accept the result.
No it's not. Can you show that with any sort of data at all? Or do you define "a lot" as simply "more than a few"?
The Remain obsession with a single bus is really sad. There's no evidence that this was a major factor in the vote. Immigration and sovereignty were the top two issues as shown by repeated polls, vox pops, the views of campaigners themselves, etc.
It's an especially weak point to bring up because it appears to have been wrong in the wrong direction: nobody campaigning for the EU mentioned an £80 billion exit fee, and if that had been known about or incorporated, the true cost of membership would have been much higher, perhaps more like £500 million a week.
Additionally there were lots of lies told by the Remain campaign that were far more impactful and serious. For example, Cameron saying he'd stay on to negotiate with the EU in the case of an out vote (despite having failed to achieve anything before), which turned out to be a colossal lie. And a very important one because it made Osborne's threat of a "punishment budget" credible. Yet he resigned immediately, clearly he didn't decide that on the spot, he knew he wouldn't continue if he lost the vote.