Just 18 elite universities produce half of all computer science professors, 16 schools produce half of all business professors, and eight schools account for half of all history professors... What that means is something every Ph.D. from a less-prestigious institution knows all too well: No amount of publishing, teaching excellence, or grants can compensate for an affiliation that is less than favorable in the eyes of a search committee.
This is just wrong. It is possible that publishing and grants are correlated with institution rank (and teaching excellence is usually a relative measure so hard to compare across schools anyway).
It seems decades of anti-discrimination indoctrination have resulted in a situation where no argument is to sloppy, and no evidence is to flimsy, when you are arguing that discrimination exists somewhere.