Yet many people leave college with few connections and little networking ever done. So by your standards anyone without those social skills should consider college as a total waste of time and money. College: only worthwhile for extroverts.
One of my litmus tests for looking at prospective MBA programs is which ones require significant industry/career experience, versus those that promulgate a high school > college > MBA > management position with zero real world experience (i.e. are more driven to the consulting/networking audience).
That should lead to hopefully finding an MBA course that augments my knowledge on a technical level rather than a mindset of "I did this course so I must know more than you about how to do your job".