I'm not sure, but I try my best to assume good faith / be optimistic.

This one hit a sore spot b/c many people are putting time and effort into writing things themselves and to claim "no ai use" if it is untrue is not fair.

If the author had a good explanation... Idk not a native English writer and used an LLM to translate and that included the "no LLMs used" call-out and that was translated improperly etc

note that the front page also says: "61 chapters • Project-based • Zero AI"