Doesn't sound all that different to the Commission/Council (one per country) and the Parliament (numbers allocated more-or-less proportionally, except slightly adjusted in favour of the smaller countries)? Anyway, going back to the original argument, this all seems a very technical and theoretical reason to object to the EU.
Who says? Brexiters often make claims like this, but does the EU really seek the end of the nation state? I think that claim is pretty far-fetched.
I see no reason to think it does, no. Do you know of any EU mechanism that does limit economic growth, or trade with other countries - and can you explain how it works? And, perhaps more importantly, why? I don't see any logical reason why the EU would want to restrict the economies of its members, or why anyone sane would agree to it.
I don't really know what you mean by that. As we are not in the Euro, how are we affected by "the docile southern European economies"?