There's Diogenes, the original cynic with a dog's lifestyle, and there's the Diogenes Club in Sherlock Holmes. In this classical context it's about being unconventional and challenging (challengingly silent, even). You can say "that's just skepticism" but it comes with a certain sulky refusenik flavor, and yet it's defensible as a form of individualism, and presumably positive, at least because it's one form of diversity and critical thought.