How is the article title clickbait? They expected the spectral lines of hybrid atoms to widen the same as regular atoms when immersed in a dense fluid. Instead

How is the article title clickbait? They expected the spectral lines of hybrid atoms to widen the same as regular atoms when immersed in a dense fluid. Instead the spectral lines narrowed. This was so surprising they thought they made a mistake and spent years checking over their work only to conclude that, yes, the finding was in fact real.