Everything that is passed between generations is traditional, there is nothing arbitrary about it, that’s how traditions work. Whole europe has traditional dishes with tomatoes or potatoes. 1000+ years anceators probably have a lot more differences than some traditions, most languages drifted enough to be not even comprehensible.

Why do you think that tradition that is 50 years old is less siginificant then one that is 100 years old?

How much does it cost to build one?