I don't think it's clickbait... when I think of clickbait I typically think of something that is either (1) exaggerated or misleading in order to induce a click (e.g. "Tucson dying of thirst!"), or (2) uses tricky, withholding language to induce a click (e.g. "Tucson drew water from Colorado River, you won't BELIEVE what happened next!").
In this case, it's an accurate description of the phenomenon discussed directly in the article.