What propaganda targeted was British exceptionalism and that exceptionalism is ultimately what drove the Brexit movement. Do you think that has disappeared from Britain with the older voters? I wouldn't say so. Whenever there are online discussions about UK rejoining the EU there are brits who don't want to join as a "regular" member. They want to rejoin with some of the benefits they had before Brexit, they want special treatment. To me that says that British exceptionalism is still very much alive and kicking.

There is a simple way to solve the mess, it's rejoining the EU. But Britain doesn't want that so I think the “well, you voted for this, get fucked by your own greedy elites” (to put it in your words) still applies.