The Germans speak exceptional English and they even speak English to each other, 99% of the time anyway. Their controlling skills are, I suggest, on a par with the UK. No complaints there.
Disagree. Holder of the German BZF 2 (if that RT license still exists) can still communicate in German and I have heard so flying into a couple of German airports, plus there's the frequent chatter in German. 99% is grossly exaggerated. Controlling skills of the French ATC are on pair with the UK, Germany, Netherlands etc. what I have experienced but I am sure certain people will dig for exemptions and demonize those.
Referring to the international language being English there's also a document that states that the language of the ATCO and pilot can be used if both so agree. Can't find it right now
The usual suspects would continue to speak their own languages and destroy everybody else's situational awareness as they do at the moment.
Does that include reading the paper and/or working on your crossword puzzle? I never felt my situational awareness being compromised in a foreign language ATC environment. The argument doesn't really hold when you consider military traffic on UHF.