How have you come to the conclusion that the author's conclusions are wrong?
Many in this thread have rightly pointed out that the author is speaking of the future which can't be know with certainty. Are you telling issue with the level of certainty the author seems to have, or do you fished with the argument of impending doom?
I think you could view HN as a fishing pond and fish selected voices privately to another private platform if you are really serious about high quality content.
If the article had approached its central question--whether to tell people or not--by first saying something like "suppose that we knew the civilization is going to collapse in the next ten years, the question arises: should we tell people?", it could have avoided more of the pushback it received.
Therefore any uninformed, emotional crackpot can submit a rant with no proof, no evidence, no citations, with no credentials so it’s not even an appeal to authority, at best it’s an appeal to emotion and or intellectual laziness.
I grant you the freedom to express yourself freely, and in return you grant me the freedom to call your low-effort rant garbage. Its a two way street.