So did Shotokan, and that's often seen as traditional. Same for Goju Ryu. Besides, I see no reason for the idea of tradition to be limited to a one hundred year time frame. Ideas from the 20's aren't exactly modern. Today's boxing, muay thai, wrestling, etc are just safer offshoots of older traditions that have become our traditions thanks to cultural exchange. What about freestyle wrestling in the UFC? That's old as hell. Besides, according to
this The Gracies are all about tradition. BJJ isn't traditional Judo of course, but the Gracie stuff is traditional Gracie. As usual, cultural exchange sparked new traditions.