Wow, that may be the best description of the concerns of the MBA I've ever read.
I have my MBA and, to this day, I still don't know how I feel about it. Sure, it covered a lot of valuable theory and it's opened doors, but then again I often wonder if the time would have been better spent in industry, honing my skills in the trenches.
The #1 quote I remember from one of my professors, "A degree in business is a degree in nothing."