Cleverness would let us in on the metaphor without us having to read the article.
In that case the superlatives are blatant puffery, and the factual part of the line is accurate. That's not nearly as bad as flat-out lying, like the title on this article.
The objection is to intentional misrepresentation of the story you get after you click. This one clearly does that.
Even the example given above ("Shocking!" "You wouldn't believe!!!") is the kind of headline that virtually always misrepresents the shock(!) and disbelief(!) one will experience upon giving it the click it so desperately wants.