dang made a comment on an Ask HN whose topic was "Should HN ban ChatGPT/generated responses?" a couple years ago (
https://news.ycombinator.com/item?id=33945628) that said "
They're already banned—HN has never allowed bots or generated comments. If we have to, we'll add that explicitly to https://news.ycombinator.com/newsguidelines.html, but I'd say it already follows from the rules that are in there." So it seems that submissions and posts that are clearly LLM generated without any content of value can, if I understand it correctly, be legitimately flagged as not being allowed the HN guidelines.