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.
Democratic socialism is still socialism (It’s a bit broad to explain what it exactly means as it can range from wanting to achieve socialism through elections to not considering capitalist democracy as democracy and wanting to revolutionize into an actual democracy). That’s not the thing Nordic countries have. Nordic countries have social democracy, which is a form of capitalism where the government puts emphasis on social programs.
Social democracy can look great, because you can end up with a welfare state like the nordic countries did. But it’s not really trying to get rid of capitalism, it only tries to alleviate the problems capitalism causes.