One very good reason is those gay suits you have to wear
If you consider that Savate or Boxe Francaise was know before Karate was introduced into Japan ( pre 1922) namely already in the 19th century, then it is strange that it isn't more popular
Although not shure, I feel that there is a thai connection in the roots of Savate
As a remark, I have my diplom for Savate Instructor A and B
Oh and Spanky, Savate is losely translated as communistic Rightwingass kicker