Those comments seem to me to be a combination of Dad jokes and “home truths” from someone who has lived long enough, witnessed enough, and whose career achievements are objectively impressive enough, that their perspective should be at least a little food for thought.

Of the “home truths”, of course people can disagree and debate them, but we should ask ourselves what we know that they don't know before dismissing them out of hand.

All that aside, we still don't call people we disagree with trolls on HN; that's a term reserved for consistently-bad actors who should be banned.