Perhaps the onus should be on ICAO and not the French per se who are allowed by the ICAO rules to use mixed languages in this way, to ensure that only English, or whatever should be the clearance language with an emphasis on poor weather. The French do not break the rules.
Lucifer, you are so right. I don't think people intentionally imply the French break the rules, more along the lines of safety issues associated with bi-lingual ATC services. Perhaps frustration steams from the fact that aircrew and controllers can speak english?
But, and I acknowledge I am guilty as well, it's easy to fall into French bashing. To further the discussion, would there be international outcry if ICAO were to stipulate that english was to become the only language to be used?