Not a bad article but nothing really new. As an undergrad I majored in public history & religious studies (wanted to be a museum curator) while supervising a digitization lab in the special collections library. I didn't have a clue what I wanted to do with my life after I realized I hated curatorial work, so I got a job through Manpower doing web design. Modern web technologies were still emergent then (1999) and I was able to keep abreast pretty well for a few years, until my interests moved more into project management and then actual team leadership.
I've been successful so far and now direct about 60 great people worldwide. I've also had time to reformulate my career objectives and realized going back to school was a sensible thing to do, especially if I ever needed a piece of paper to validate my cv in this down economy. I chose a multi-disciplinary systems engineering program at NCSU and it's been a terrific experience that's meshed very well with my current role at work.
This was a longwinded introduction to my main point: I see other people in both my masters program and other graduate fields at the university who have absolutely no experience in the real world. Not only that, they still tend to believe that the management track of an MBA is where the money is. They're going to be sorely disappointed when they graduate and realize no company worth it's salt is going to think twice about hiring a newly minted MBA that 1) has never worked a real job and 2) has no management experience. I'm starting to work with both my department head and others to help mentor and guest lecture for these students, and hopefully jolt them back to reality.
This isn't to say that an MBA is useless, but an MBA should be a complement to one's work experience and is by no means a replacement. I completely agree with the author that a background in philosophy is often a better tool for a manager than an education in finance/management (still, too many companies lead by the Taylor style of gauging productivity and because Excel still runs the business world there's a strong tendency for managers to try to quantify performance based on metrics... the wrong metrics.).