Well, boiled and salted crawfish used to go nicely with beer, but the French are more into wine... tough luck.
Perchance the French might be rude to them, because they don't speak their language. Perhaps they could export them to the Ivory Coast... I hear that crayfish love quagmires. In fact, I don't see why the french might learn the art of sucking their little heads... certainly more tasty than horse meat, and more succulent than a small wren. I can see it now: "The French Declare War on Crayfish". It's the perfect match; the French advance in war just as the crayfish does. And they have a similar smell, Yes! They have too much in common not to welcome them... maybe even vote them a deligate to the UN Security Councel.