I had to look it up too, I had forgotten about it as it was not very interesting: https://news.ycombinator.com/item?id=24164470

Note that the link is to an article on HN, not flagged, and the comments pretty clearly debunk the article's claims. TLDR, author wrote some clickbait headlines and used gpt3 to fill in the articles, with an unspecified amount of editing, then some of them got onto the front page of HN and he wrote an article about that.