None that I could see:
Your submissions to, and comments you make on, the Hacker News site are not Personal Information and are not "HN Information" as defined in this Privacy Policy.
Other Users: certain actions you take may be visible to other users of the Services.
I mean, just because they say the comments are not PI doesn't make it so.
That’s a good point. I’m only referring to the terms they used in the privacy policy.