That still makes no sense. There are a very large number of non-Ivies that are more “desirable” and “braggable” than half the colleges there. Where is CMU? Where is UIUC and UMN, since they have Wisconsin? They have UCSD, but not UCLA or Berkeley, Dennison but not Kenyon, Grinnell or Carleton. They have Wellesley and Colgate but not one of the other at least a dozen colleges very popular LACs in the NE. NEU, BC, and NYU, but not BU, Tufts, or Brandeis. Virginia, Emory, Wake Forest, Miami, and GTech, but not W&M, UNC, Vanderbilt, Georgetown, or Tulane. No Northwestern, WashU, or Notre Dame, either.
No sense at all.
I am assuming that they include Chicago, Stanford, MIT, and possibly Duke in the “Ivies” category.