The article seems to imply MBAs are consulting right out of business school, in other words without experience? The education is valuable, but unless consulting is very different in the "business" side of things, this sounds dangerous.
Most MBA programs only accept students with several years of work experience. There are always a few straight from undergrad, but the vast majority aren't. Typically , fresh MBA grads that are 'consulting' are just juniors on the projects. They are basically just excel monkeys for a few years until they gain more specific experience.
The bulk of people in the consulting industry are undergrads right out of college. Source: in consulting