Firstly Mr. Rachman is not a Political Cosmopolitan, for that see Ulrich Beck’s Cosmopolitan Vision. Mr. Rachman is a ‘pundit’ who is paid to write propaganda:

It’s only seen as propaganda if viewed from a nationalist point of view.

Explain to me  how your statement applies to me, a writer on the Left? Perhaps, you might argue that I’m a dupe of that ‘nationalist’ point of view? You are a modern day Augustine persuing the Arianism, Donatists, Pelagain apostates .

According to your narrative, I am unable to  see this home truth , that the EU is the next step in the evolution of the nation state, into a Utopia called the EU. That EU is  governed by Corporatist principals  Your first paragraph is instructive. According to your diagnosis of the nation state being ‘a dying concept’  even ‘quaint’ : an insulting trivialization: prima facae the EU marks the arrival of Utopia is your claim. A

Except that this Utopia demonstrated, in the Greek Crisis, thatths  who pulled the levers of power in the EU were Merkel, Schäuble and the ECB. That Germany was a four time defaulter in the 20th Century, see Gillian Tett’s ‘A debt to history’ at the @FT.