Is it really true? I don't know. Commentary Mag doesn't give a source for this assertion, but it certainly sounds like something the French would do ;-> The Russians have done similar things for people who drop a lot of cash with them on military hardware.
A bit of riteous payback perhaps? In 1979 the Iranians canceled a big contract with the French for a nuclear power plant.
...At that point, one reactor (Bushehr I) was declared by the Germans to be 85-percent complete and the other (Bushehr II) 50-percent complete. Both were subsequently damaged during the war with Iraq that lasted until 1988, chiefly in air strikes flown by seconded French pilots. Siemens was asked to return to finish the work but, knowing that the German government would never allow the contract to proceed, refused...H/T Tigerhawk