I'm one of those people and in my opinion it would be hard to make a solution that fits all. The reason why it works for us is because we control the design system and we know the needs of our app and users. It works because it's somewhat bespoke to our use-cases.

It simply is not possible to represent the realm of all possible native UIs within a common json schema. We can do it because don't need the realm of all possible UIs. We need a 20 different elements recombined and reused across all our screens.

Which is also a strength because now we can leverage our limitations into delivering a consistent experience across our app.