I've been contemplating this one too.
Once one starts discussing changes to borders, sovereignty and blah-exits, there's no reason to restrict it to the dreams of the people who first raised it. It's a game anyone can play.
Indeed everyone else has no choice but to play, once the game's been started.
The idiocy here by those kicking off, is that they fantasize they will win whatever wars they start. They don't grasp that they're team may lose – bigly.
See also white supremacist fantasies about race wars.
The only winning strategy is not to have the wars...