If you are clever enough to hold an Airline Pilot Licence, you should be able to learn BASIC Aeronautical foreign language. (line up, landing, take off, and hold short clearance to name a few) In fact this should be a requirement to get an ATPL, instead of learning Morse code!
ICAO official language are English, French, Spanish, and Russian. Full stop.
So stop being arrogant with your xenophobic attitude toward french ATC. They have their problems. UK and US and others ATC have their problems and their incidents as well.
How about Madrid or Spanish ATC speaking Spanish ?
How about Quebec ATC speaking French?
How about Geneva ATC speaking French?
How about Russian or former Soviet republic speaking Russian?
Finally how about Inverness with their Scottish accent? (or Savannah for the US?)
As somebody mention earlier on, dual language never kills anybody so far. Stupidity and error does.