The problem with click-bait is that it's so omnipresent with websites like BuzzFeed that if a journalist uses a non-factual title for an opinion piece, people say it's click bait. IMHO it's really fine in that case.
This. It does not deliver on the promise in the headline, and the headline exists only to make you simultaneously infuriated, confused or curious. If someone posted a comment with those properties they would be banned from HN.