I wonder why the legal profession sticks to natural language

They don't, though. Plenty of words in law mean something precise but utterly detached from the vernacular meaning. Law language is effectively a separate, more precise language, that happens to share some parts with the parent language.

There was that "smart contract" idea back when immutable distributed ledgers were in fashion. I still struggle to see the approach being workable for anything more complicated (and muddied) than Hello World level contracts.

Because law isn’t a fixed entity, it is a suggestion for the navigation of an infinite wiring

Backwards compatibility works differently there, and legalese has not exactly evolved naturally.