Yes, they definitely do live in an echo chamber which is why their views are so skewed, but they also live in the world of globalist weasels who love this crap. Most of the people who would participate in a body as anti-democratic as the EU are not dependent on their own nations to succeed to make their checkbooks fat. They, like say, AlGore and Soros and these creeps, are mostly tied to economic interests outside of their own nations and could honestly care less whether or not their own nations sink or swim. Do I care whether the company across the street goes belly up?

Now you can go crazy down the conspiracy road here and think those people are somehow in a cabal, but I think it's far more simple than that. They are just more reliant on groups outside their countries for their personal success.