Yep. And we only notice the obvious ones. And the quality of AI comments will only improve over time. Which raises the question (unanswered as far as I can tell) of what to do about it, and whether it even really matters...

IMO:

If the comment is a quality comment, I don't care if the poster used AI, if its a low-quality or inappropriate comment (and a summary of the existing comments counts), then downvote or, for egregious cases, flag it.

The issue (temporarily) is that many consider a long comment = high effort = probably high quality. Now we have to change our heuristics.

That's... not been a major factor in my heuristics.

Also a bit pointless when it's just summarising < 90 HN comments. One can skim that in a minute or two anyway.