I agree that competition between peoples is counterproductive. But this is the world we live in. I also think that in large part international competition is pushed by the US as part of their culture and because they are the leading world power. In this world order, Europeans should be able to sit at the table as equals with other major powers.

Also, why does federalization have to mean the death of cultures? Can't we come up with ideas how to have both?

Fantastic! I propose we should have a common language, you conclude it must be because of fascism. Brilliant take.

Most of the time for bureaucratic legalese you would need a local specialist either way, even if the documents were written in English because you need to know local laws (or where to look them up) also. Going back to the Netherlands example, I think that's a totally reasonable behavior on their part, yet never has been an issue to me not knowing Dutch, nor has been an issue to me not knowing Danish in Denmark. But for regular daily activities - Uber, restaurant, healthcare - communication is fluent and that's what matters for those living there temporary.