Probably because it’s attracting tons of low-quality comments:

https://news.ycombinator.com/item?id=47736254

https://news.ycombinator.com/item?id=47736315

https://news.ycombinator.com/item?id=47736046

https://news.ycombinator.com/item?id=47736038

That's probably not why actually. The usage of AI for propaganda in this way is objectively HN-related. But it's making the paedophile/Epstein regime of America look bad so the MAGA base are flagging it.