> 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.
On point 2, someone posted a tool a while back called Stylometry which is now sadly defunct, but had some interesting feedback and seemed to be pretty successful at identifying “alts”. I’m sure that the tech has improved since then and would be only more accurate than it was a year ago.
I'm pretty sure hackernews posts can be used as a unique fingerprint, especially by a party who collects sensitive text information like chatbot conversations.