He would not do that. If people do not wish to be contacted outside of HN they leave their contact information out of the profile. I personally like that I have the option and to keep conversations here. If something was urgent I can create a throw-away email and temporarily list it in my profile, then remove it.
I would suggest that if people opt to share contact info in their profile, they should use a canary address that can be discarded without causing grief as there are some unhinged lurkers. I see them planning raids on this site from other sites from time to time.
Recently, I found it creepy that someone actually found me elsewhere on the internet because they got upset with something I said on here, then were trailing my fairly well manicured online presence for ad hominems to use here. I could see it in my analytics logs. I found it pretty weird, so I for one wouldn’t want any more of my contact details available here, where I’m free to say whatever I want and let the community upvote or downvote it.
I think that unless you’re going to reach people daily, it’s probably okay to find a recent comment of a user and try to explain your ideas and communicate under it. Worst case they’ll politely pretend being offline.
The response to this bit is a little surprising. It's really not that uncommon for a platform operator to forward the rare message between users - even Github does this (I've requested they forward several messages to users in regards to acquiring particular usernames)
Most of us don't want to be contacted on HN, we just want to discuss randomly in comments, that's it!
The idea is if you want people to contact you, add an email, you maybe forgot to. If you don't want to, move along, nothing to see here.
if you want to contact somebody just make the move, ask in a comment
Oh my god no. I intentionally am uncontactable on here and I’m sure that’s true for many others. I don’t want HN people to connect with me, open doors, etc. It may surprise some folks, but some of us don’t give a shit about networking, hustling, etc. via online message boards.
For all the high quality tech people on here, there seems to be a similar number of hucksters, get-rich-quick people, life-optimization-influencers, technical dilettantes, and other types I actively would like to avoid ever being contacted by. If the admins ever facilitate piercing that anonymity that would kill this site forever for me.