You can do it, but you have to sort of stick to the lowest, most-basic concepts. As soon as something gets more topic-specific or detailed, expect it to change rapidly and/or go off on some tangent.

The problem seems to be that active product developers own the repo, so they use it like a place to dump their product docs (so they change with every change to their implementation), instead of as a place to specifiy overarching concepts that everyone can agree on.

We've learned to basically ignore the repo. 🤷‍♀️
I don't know if they're even aware of any devs outside of their little ingroup, anyway.