The people who think it's most important of all are the people who disapprove of it. If we're living in an era where everyone thinks the details of their gender and sexuality are important, that's not because of hipsters in Brooklyn, it's because of fundamentalists in Kansas.
>In a way we can see this in how protest movements are labeled - it used to be that they were labeled by their goals or the problems they were trying to solve, like the "Civil Rights Movement" or the "Conservation Movement." But now we label things by their identity.
I think this might be a rather hasty generalization. What about the peasants' revolt, or the women's march on Versailles? And there are lots of protest movements today that aren't labeled based on identity, such as most of the worldwide protests against Trump.