You are indulging in the received, mythological wisdom that sez the EU wants to become one big, happy country. Once your argument is predicated on such arrant nonsense the whole thing collapses like a house of cards. As for Scotland/Catalonia, it may well be instructive to make comparisons, but not at the moment, as the fundamental difference is that the UK is leaving the EU whereas Spain isn't.

"Dim" could mean misspelling the name of a Spanish region incorrectly seven times in one thread when all around you are spelling it correctly. Best not to call someone else dim when you yourself exhibit such a deficiency.