[floundy]

Of course there is no "hard evidence" unless someone leaves evidence of the prompt or AI response in their blog post. There are certain clues and syntax. Your comment seems like it would fit in much better on Reddit than on HN.

[OutOfHere]

Negative. You're the one making unproven bad-faith assertions, trying to discredit someone on the basis of witch-hunting logic. Your comment belongs nowhere.