I would first like to have some solid evidence that these are caused by the confederal structure of the EU,

I mean, they are self evident, no? A balkanized investment market exists because there’s no single structure to manage one large one. There’s no single EU military. No?

So far that seems to me like pure conjecture and also a huge gamble that could destroy the EU in the process.

I can’t be arsed to give any other than logical arguments such as the above. That’s why I said I’m happy to leave this as an ‘agree to disagree’ moment, because that’s really hard to prove one way or the other, and I consider this casual conversation not debate. So I’m happy to just say we have different perspectives here and call it a day. I’ve cited a few examples, as have you, I don’t think either position is stupid or poorly thought out, I just disagree with your conclusion.

But that is exactly what a confederacy isn’t. And the concrete example is that people in other states voted for Trump and thus directly interefered with the affairs of a state that didn’t.

Isn’t this just libertarianism?

That isn’t at all comparable to a state internal problem.

You’ll have to explain to me how. Whether you “zoom in” or “zoom out” the principle is the same, as far as I can tell.