Let me make a generalization from what I have observed: Those who insist on labeling themselves and others so that they can loudly claim NOT to be of certain labels tend to be insecure in one or more areas of their lives, most commonly relating to the area where they insist labels are important. Such individuals often believe or seek to maintain that their label is superior to the other labels or at least some of them. While such labels may be all fine and good as long as they are part of a personal search for identity and happiness, they cause all kinds of problems when pushed at or onto others. Let me give an absurd example. I love chocolate. I am just shy of being labeled a "chocoholic" and make a big point of saying that I am NOT one. They are a little too out there. So, I'm better than them. I may worry that those who aren't similarly nearly addicted are actually healthier in their habits than I am, but I'll quote all kinds of literature to point out how some chocolate is good for you, and ... anyway, hopefully you get the point.