I don't have the time to decode this borderline schizophrenic nonsense, what's the point and how does it relate to the right to access currently inaccessible land?
I appreciate that an intensely "conservative" cultural form is used here to make a pro-populist argument for "liberal" rights.
This lines up well with the kind of stances that the Anglican Church ended up taking in theology. That Church follows both Scripture and Tradition. (By contrast, and generalizing a bit, I think an extreme Protestant stance would tend to value only Scripture.) This feels like a more secular version of same.
To put it more concretely: a written document from a thousand years ago is almost unintelligible to all but specialist linguists, and its accurate interpretation difficult for all but specialist social historians. Yet the customs displayed by a people that long ago would still seem very familiar today. Which would you trust to form the basis of your community's sense of justice - the faded old document in a strange language, or the equally ancient tradition passed down habitually across generations?