What politicians seem to forget is that the retreat from reality is the refuge of people who are scared or who feel powerless.
At the heart of Leavers vehemence (I think....and I may be arrogantly presumptuous, but am interested to debate this), is a sense of a "lost place in the world".
There has always been a strain of English British person who relied on faded Imperial power for their own sense of authority or power.
I have worked in several parts of the UK, and there would always be one person who'd come out with a variation of "oooh, you're Irish, Paddy backwards, drunken, ooh you all curse so much, don't you still belong to us anyway ".
If that sense of power is threatened, then what is left?
At the moment, not a lot.
Re-orientating your national mindset away from the Imperial Lord and Master, to, being yet another nation making it's way in the world, forging alliances and friendships on the basis of mutual respect- that's a jump that hasn't seemed to happen.
JRM's looney notions of the Irish "deep state" is reflective of failing to treat your neighbours as equals.
After all, if we're "only" Irish, then how could we possibly have caused the breakdown of the ferries contract, without darker forces at work?