But I think this is what the author was trying to say. An MBA (I'll talk about the MBA since undergrad business degrees seem really terrible) is a way of gaming the corporate structure (and getting a raise in salary and so on , as you point out) more than acquiring any real skills or insights, which is why most MBA students become Management consultants vs entrepreneurs. One job is about talking the talk and the other is about walking it.
As an enginner/hacker I am a bit dubious about how business school professors can actually teach anything business related. (By and large) They have never run businesses, so how can they teach you how to run one? If they could build or run a multimillion dollar businesses would they be teaching? ( Not snark, I am genuinely curious. Can someone who has done an MBA explain how this works out. What value do these professors add. Couldn't you just read the books yourself?)