That discussion is based on the earlier version of the article which has a different headline. This is a new piece of information that is significant and should be surfaced.
Yes but HN doesn't really work by 'every hourly development in a story gets its own frontpage thread' because then it wouldn't work at all. In fact, the story linked is in https://news.ycombinator.com/item?id=38325552 is more up to date than the submitted tweet.
