McKinsey is particularly known for obfuscating experience level and favoring a funnel of new ivy or ivy-like grad (often at graduate level, mind) through an internal bootcamp approach and out into the world as "expert".

I think that's what the GP was poking at.

You aren't wildly wrong on the job as a whole, though reasonably often it's more to escort boring bad ideas through the politics for someones benefit. And on the "amoral" front, they know what side their bread is buttered on.