as we told you, it is legal, it is not safe,and some mitigation is applicable(translation or separate frequency)
What is the most important thing to understand? Geneva ATCOs is multilingual, definitely. If you don't know French ,they know English.
In some countries there is operational ATCO on published frequency , communication is/ should be done on English but ATCO on duty doesn't know English at all.
that is the problem, and it happens.
