Yes but the guideline states that AI-edited comments should not be posted. It doesn't say it's okay as long as it's "human sourced" or "human-originated".

So if your layer of cleanup is AI assisted, then it's in violation.

Part of the problem I was getting at is that the requirement of "Don't post AI edited ..." is stricter than necessary to ensure the outcome that "HN is for conversation between humans" because an AI edited post is still a human post.

Anyway, I suspect a lot of people are going to ignore that guideline and will feel free to use their "layer of cleanup" whether it's a basic spellchecker or an LLM, or whatever else they choose, and most people aren't going to be able to tell anyway. The guideline is unnecessarily strict in my opinion, but it doesn't matter in the end.