Because kickboxers don't know nothing about savate technique.
They would be disqualified in the first seconds of every assaut fight because of the "NON SAVATE TECHNIQUE". But there is another posibility. You go to combat where nobody except French team knows nothing about savate and in this way you compete in the same kickboxing brotherhood. There is no technique, no strategy it is just that "Tough Guy" expression on your face. So typical for a Balcane region nations.