Why aren't you complaining about what happens to your HN posts?
That doesn't seem related to the point?
Do you disagree that "Posting on a public Internet forum (such as HN)" is (other than the "communicating information to other people" aspect) _radically_ different than "Talking one-on-one to someone in person without any recording devices present"?
If you do disagree, then there's no way we can have a even vaguely productive conversation on the topic.
1. We're anonymous here (by default)
2. You can't be fingerprinted from your HN posts the way you can be with your unique voice