LLMs are also good at commenting on existing code.

It’s trivial to ask Claude via Cursor to add comments to illustrate how some code works. I’ve found this helpful with uncommented code I’m trying to follow.

I haven’t seen it hallucinate an incorrect comment yet, but sometimes it will comment a TODO that a section should be made more more clear. (Rude… haha)

I have seldomly seen insightful comments from LLMs. It is usually better than "comment what the line does" usefull for getting a hint about undocumented code, but not by much. My experience is limited, but what I have I do agree with. As long as you keep on the beaten path it is ok. Comments are not such a thing.