The principle behind letting a title like this one stand where not everything is spelled out is that it encourages a quiet, reflective approach. This is a highly desirable quality for Hacker News in that it supports the gratification of intellectual curiosity, which is why we're here.
I hear the same complaints from an 84 year old friend with greatly diminished eyesight who gripes about this all the time in newspaper headlines. Teasing titles which reveal nothing and force the reader into the story. He's among the few subscribers the paper has left, and is about all out of fricks to give for their shoot.
This is clickbait.
The fundamental problem with clickbait, and the reason it draws so much rightful ire, is that it is deliberately contemptuous of its reader.
HN should fix the title or flag the post. Fixing the title wins my vote. Particularly as you've already troubled to write an excuse not to.
I'd explain why, but TeMPOraL already did so perfectly in the insightful second paragraph of https://news.ycombinator.com/item?id=12746980, every word of which I agree with.
It's not like they said "9 great traps all Americans fall into. Number 3 will blow your mind!"
Different technology, same user-hostile purpose.
That's subjectively defined so I'm not sure how you can be authoritative judge here.
I think it is clickbait, and I think the people here are pretty smart and completely understand why this is relevant given current events. (By relevant I do not mean accurate)
I guess it depends on what you believe article titles are for. I believe they should first and foremost be a tool for readers to decide whether or not to look at the article at all - therefore they need to accurately tell what the article is about. Sadly, most publishers consider headlines to be a marketing tool (with implicit assumption that the article is interesting for everyone).
ex: "The Great Trap for All Americans | Prejudice"