You try to maintain quality control...In a way Krav Maga is like rare wine and each year had different batches. There are many imitations as well.
Imrich Lichtenfeld was the first Krav Maga Chief and Eli Avikzar followed his footsteps. The first was entrusted with the virtue of honing all physical aspects of combat into the molding Israel Defense Force. The second was in charge of the specific skills of Krav Maga Only!
As the father of Krav Maga and the Israel Defense Force physical molding of fighters Immi wished to keep the deep intensity of such in the Israel Defense Force. Thus he resorted to more of a sports training occupation after retiring from his pre military and military career. Later he even called it Krav Maga and founded the civilian Krav Maga association...
Anything that starts in science and adopt too many spiritual elements with less checks and balances of science becomes an unfounded religion!
So you have a ranking system whether its English, German, Japanese, or Chinese...Part calls for respect, and part calls for ridicule, admiration, or faith. You need it so be not only respectable, but also based on essential merit!
It needs to attest for something. At the lower levels of the ranking system, its simply following the training regimen and mastering the training system sufficiently. Then its about setting up a school and teaching the elements of self defense and hand to hand combat. Then it is maintaining it providing precious service to humanity - "so may one walk in peace."[Imrich Lichtenfeld]
"Nothing is new under the sun" said King Solomon. But its the lack of teaching all the old stuff and lack of learning it, and the false teaching and learning that keeps making every day new! The process of learning - transformation from blank mind to a powerful brain is very slippery...