Poster literally says in the comment you replied to that they used other code they had to speed the development, so no it doesn't appear they wrote it entirely with an LLM, not that would matter if they did as long as it did what it was suppose to do (and what it was suppose to do isn't being defined by a gatekeeper).

Coding agents might get there someday, but today they still need quite a bit of assistance.

What appeared as a good faith question, was answered in good faith and of course was later revealed to be a "gotcha" question. It's all so tiring.

"Oh so you drove all the way to my house? You couldn't walk?"

They already said they used AI, why ask again? These sorts of comments are unnecessary even when there might be a lack of transparency, which isn't the case here at all.