As I mentioned recently brexit is not simply a matter of the EU and the UK. Worldwide events matter yet I have seen no mention from Chops on worldly influences despite him being the poster who keeps fueling this thread.
The EU are already in dispute with each other over migration from Afghanistan and that situation is only just beginning.
The EU will become in conflict with each other over Migration and I can foresee it only adding to the very delicate relationship between members and adding to the very debatable existence of the EU.
If the EU do fold then would anti brexit supporters agree that the UK dodged a bullet?

Frances Macron said that Illegal migration from Afghan should be robust enough to"protect Europe from illegal migration" But he does not apply that thinking to the English channel.
Poland,Hungary,Greece and Italy among other members will make things very difficult for the EU in coming months. That is besides other EU issues.
As an aside I can just imagine Biden with his advisors talking about the emerging threat of China asking what they can do to counteract their threat being told to have a military presence in Afghanistan and replying "where is that? We must invade them tomorrow"