What is it about techies that they come over so smug when pointing out deficiencies in others? Probably a response to the bold, did-no-wrong, we-worked-hard-an

What is it about techies that they come over so smug when pointing out deficiencies in others? Probably a response to the bold, did-no-wrong, we-worked-hard-and-that-should-count and generally arrogant attitude of the people they're criticizing.