The problem with most anglo-saxons pilots is not that they don't want to learn a foreign language - it's that they cannot...
I may have misunderstood you when you claim that Anglo-Saxon pilots cannot learn a foreign language.
But in my opinion, it is not that we cannot learn a foreign language, as we certainly can, it is a question of just what language or more accurately, languages.
I have flown Central and South American, Spanish, so that would be easy as every country speaks Spanish, Except for Brazil, oops, Portuguese. So now that is three languages, English, Spanish and Portuguese and I’ve not crossed any oceans.
Now I’ve also flown in the Philippines, China, Singapore, Viet Nam (well after the war), Dubai, India, etc. and I’ve not even gotten to Turkey, Greece and the rest of ‘Europe’. So how many languages is that? I’ve lost count.
No, there can be only one language used in ATC communication by both pilots and controllers and that language is English.