Look, I don't even disagree with your overall comment on HN, but this is a complete joke. I can't tell if you are actually serious. Go to the front page of reddit now and point me to that nuanced discussion. Even AMAs are now outrage bait, with all the top comments/ questions being snarky stabs at the AMA guest.
Your comment is either only valid for very small subs, or you're a time traveler from 8 years ago.
(I've seen far more "celebrities" or experts pop on comment sections about themselves or their expertise here than on reddit. FWIW.