It's against the rules and if you scroll down https://news.ycombinator.com/yli.html you'll notice it's in bold text—that's for a reason! Unfortunately it's hard to get the message across, because people who aren't avid HN users have no idea of the conventions here, and there are other platforms where it's considered fine.

I've emailed the founders to tell their friends/teammates/etc. not to do this.