Personally, I feel the rebellious aspects of intellectualism are far, far overplayed to the point of absurdity. It leads to buying into marginalized, if not discredited, ideas and not doing a proper investigation into mainstream knowledge. I mean, how many more reddit posts about the "evil" Federal Reserve or how terrible of a person Thomas Edison was do we need? Especially when these opinions are tied to politicized propaganda from the opposition and not remotely tied to a legitimate interest into monetary policy or late 19th century industry.
I don't think young geeky introverts need to be told to be more rebellious, if anything they should learn to conform more, learn better social skills, understand the power of teams and collaboration, etc. I really wish someone told me this when I was younger. These attitudes did me a big disservice in life and I imagine I would have been much more successful otherwise.