Your comment makes me personally angry. After considering several ways of explaining why it makes me personally angry, I've settled on telling you about this person I worked with a long, long time ago -- let's call her Anya.

Anya is the model employee per your value system. A risk-taker, a people person, full of gumption and ambition to get ahead. All her life she's used these skills to project the image of someone knowledgeable, dependable, who is on top of things. So far so good. Unfortunately at one point she realized that she is much more capable at this, by many orders of magnitude, than at actually becoming knowledgeable or on top of anything. To her, learning and understanding the details of a system is a hassle; so why go through the hassle when it's so much easier to just navigate every conversation about the system, and appear knowledgeable? Why make the effort to improve at the actual job when it's so easy to judo-deflect every negative incident as actually a positive, or someone else's fault? She has a gift; being a human, and not a saint, she is compelled to make use of that gift.

Anya is not a bad person. She just takes the path of least resistance -- let he among us who is without that particular sin cast the first stone. Maybe she even has the natural capacity to match and exceed the skill level of her colleagues; it's just that she never will, because what's in it for her. One way or the other, navigating any problem with Anya on your team is an ordeal. Every step forward involves defusing some part of whatever elaborate web of obfuscation she'd weaved to maintain her image. To be blunt, the thought of people like her being actually in charge of some truly technical system, something that can't be reasoned with or bullshitted, that will cause damage and cost lives if not handled properly -- that thought puts the fear of god in my heart.

So in conclusion, being familiar with Anya, I don't buy your Randian Dr. House fantasy, this dichotomy of skillful extroverted pushy go-getters who know the job and don't take no bullshit and 'tell it like it is' vs risk averse socially inept introvert moochers. Given the choice between working with Anya on a project or instead working with Anya's risk averse socially inept introvert colleague who is actually physically capable of articulating the words "I don't know, I'll go check" -- give me the colleague any day of the week.