So, you're asking if people conform to hating conformity?
Everyone conforms to a degree, we're a social species. We'd in quite a mess if we were all so radically different from one another, like others would like you to believe. Those who go through the phase of not wanting to conform are at least thinking a bit for themselves, and it's good to consider these ideas, but in the end I think they're fed up with feeling like they have to be like the majority, a problem many of others can relate to. In a desire to show how much of an individual they are, some will go radically in another direction just to look differently. But it's still only a difference on the outside.
There are other ways to prove your individuality, though, if you're so neurotic about it- especially in your actions and in your thoughts and words. Personally, I think our appearances divide us far too much and have us forget how alike we all are to each other.