It's possible that was a wrong call; I didn't look closely at the article. If you or anyone feel strongly about a case like this you should email us at hn@ycombinator.com and make an argument for why the article and thread are worth re-ranking.
[1] https://news.ycombinator.com/item?id=34608595
[2] https://hn.algolia.com/?dateRange=all&page=0&prefix=false&so...
[3] https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...