A follow-up thought: This pattern seems to also work for life decisions, and not only for positions in debates or fashion choices. For example: A few years ago, I almost didn't take the offer to do a PhD at an Ivy League school, as opposed to a less highly ranked school, and to live in a mainstream popular city, as opposed to the middle of nowhere, because of my contrarianism. And then my meta-contrarianism kicked in, and I took the offer. I'm happy with the choice, but I do every once in a while have to remind myself of the fact that I consciously decided against my contrarianism, and sometimes I still wonder whether I should have gone with my contrarianism as opposed to my meta-contrarianism. (I.e. I sometimes still wonder whether I'm just buying into a naive narrative about 'good schools' and 'good cities' here.)
PS: This is my way of saying that I really really like Yvain's post. And I just realized it's already 7 years old.