The solution to this is to make a UI which can be used like a wiki, but in fact creates a git commit for each edit. Allow documentation-only changes without reviews or pull requests etc.
Still use ACL's in the monorepo so that people can edit their own documentation with a single click, but to edit another teams docs requires some kind of pull request/approval from that team.
Create a culture that code changes must have accompanying documentation changes, and that any substantial code change without documentation changes needs a good reason.
Then everyone can use the tools they are familiar with, and still get all the benefits of history and always-uptodateness.
Still use ACL's in the monorepo so that people can edit their own documentation with a single click, but to edit another teams docs requires some kind of pull request/approval from that team.
Create a culture that code changes must have accompanying documentation changes, and that any substantial code change without documentation changes needs a good reason.
Then everyone can use the tools they are familiar with, and still get all the benefits of history and always-uptodateness.