Thanks - this was a good catch, and it makes steam come out my ears to see any account abusing HN like that.
You don't have to email us, of course! But please understand that we're on the same side. We don't want to see HN overrun by generated comments (a form of spam) any more than you, or other users do. Remember that tomhow and I were avid users of HN for many years before we became mods.
All: generated comments and bots aren't allowed here. https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que.... If you notice an account that appears to be consistently pattern-matching to this, and have a minute to let us know, we'd appreciate a heads-up at hn@ycombinator.com. We don't come close to seeing everything that gets posted here, but we do monitor the inbox closely (including fishing through the spam bin for real users) and we take these reports seriously.