It may be a rant, but your anecdotal evidence doesn't prove its point wrong. In fact, a recent influential paper by sociologist Lauren Rivera [1] suggests that cultural "fit" is indeed an important aspect in many hiring decisions.
Rivera finds that interviews are where "fit" is ultimately determined, but résumé screening is a first step: "firms mandated that evaluators assess candidates’ fit along with a variety of technical and communication skills in résumé screens and first- and second-round job interviews" (p. 1007).