There's something about circles of control in this, that makes the difference. If I publish information about myself, that's about me, and it's in my control.
If someone else shares information about me, without my consent, and someone uses that to nose in on me, that feels creepy and problematic.
If you find that concerning, I recommend asking Claude or Codex to analyze all your HN comments and build a profile of you (I recommend that to everyone, not trying to single you out btw.) It takes about 20 minutes. It was eye opening and somewhat unsettling how accurate it was when I ran it on my own data. Even worse, there’s NO way to delete your old HN comments.