I have commented once or twice on articles being AI generated. I don't put them when I think the writer used AI to clean up some text. I added them when there are paragraphs of meaningless or incorrect content.

Formats, name collisions or back-button breakage are tangential to the content of the article. Being AI generated isn't. And it does add to the overall HN conversation by making it easier to focus on meaningful content and not AI generated text.

Basically, if the writer didn't do a good job checking and understanding the content we shouldn't bother to either.