I don't submit enough to judge whether it's HN, or the submitter, or it was accurate and then the remote page changed, but I certainly agree the HN title is goofy.
> If the title contains a gratuitous number or number + adjective, we'd appreciate it if you'd crop it. E.g. translate "10 Ways To Do X" to "How To Do X," and "14 Amazing Ys" to "Ys." Exception: when the number is meaningful, e.g. "The 5 Platonic Solids."
However it's not particulary context-aware as seen here
I find HN's automatic title editing annoying. It's wrong more often than it's right. I think it's a misfeature.