I think on HN, people waste too much time arguing about the phrasing of the headline, whether it is clickbait, etc. and not enough discussing the actual substance of the article.
This one is apparently a genuine mistake from the author. But I think we should leave it as it is. The confusion and the argument about it is interesting in itself.
> Otherwise please use the original title, unless it is misleading or linkbait; don't editorialize.
https://news.ycombinator.com/newsguidelines.html