From the wording of the article, it's pretty clear that the researchers that the authors are aware of the degree of circumspection that such findings typically

From the wording of the article, it's pretty clear that the researchers that the authors are aware of the degree of circumspection that such findings typically raise -- and that this isn't just a matter of a single associational study; but rather, a retrospective finding over many studies. Which the researchers feel should forces to consider the fact that we may be close to a tipping point, with regard to the proposed etiology at hand. Hence statements like "We can't keep ignoring the evidence", "landmark editorial", etc.