For better or worse, McKinsey and outfits like them have an ability to package a given set of advice in a way that the needed audience will be more likely to heed. Partly because they can MBA the lingo, but also just from the imputed competence that comes from having spent a goddamn boatload on their brand name.

That makes sense, and is a really good example of organizational cognitive dissonance. https://en.wikipedia.org/wiki/Cognitive_dissonance