Many of the good reasons for a long-standing rule only become evident upon further examination.
But not all of us are up to the task of intricate examination and good leaders know better than to explain themselves (or their rules) fully. A gap between these two extremes occurs and it’s big enough to play a game of “perfecting then ignoring the traditional way” forever while opposing camps battle for the current consensus (a.k.a. the ability to punish).
Tradition is just what happens when all the successive leaders for a time agreed with the in-depth examination of the rules that govern the as-of-yet unwise without saying why.