> What can HN (and other forums) do to detect/prevent this?

No clue.

But if it becomes actually true that I can't distinguish between real and AI comments, then my personal solution is to stop bothering to read comments entirely.

Which, for HN anyway, would pretty much remove the entire benefit I get from it.

I'm the one that posted about it multiple times, including noticing the 45 second pattern the second time.

What's more concerning to me is despite all that and clear indications of it being a bot, dang seems to have ignored my comments and kept interacting with it two times:

https://news.ycombinator.com/item?id=46889769

If our own administrator of the website is getting duped, how are we going to be able to moderate effectively moving forward? Pointing it out multiple times ( y me and others) doesn't seem to have worked in this case.

What would be the point of it?