Yup, this (I feel) is one of the few areas where AI is valuable.

I've got a buddy who just got hired on at a large company as a software developer. Apparently their code base is so arcane and in such unusual frameworks that they recently fed all their documentation to an LLM and are using that to help onboard new employees (vs trying to have experts try to train up people personally).

While I think having a clean and clear codebase should have been their priority, patching it over with an AI teacher is far from the worst solution.