People don't want to read LLM-generated docs though. It'll lack the context to justify why things were designed the way they were, and there's always a risk of hallucination so you still have to verify the documentation's claims, since the person who published it likely did not scrutinize it.

There's two major types of documentation "why is this like this" documentation and then there's "here's the features of this library/tool" documentation. LLM stuff is fine for the latter as long as you screen it for hallucinations. Your right the former they can't really do because they don't have access to the reasoning but I've often found even the latter to be lacking in many teams.

If you have artifacts saved as you develop it can use those when writing docs to capture intent and design decisions.