It’s fashionable to talk about them. It sounds intellectual™. They’re not supposed to exist and only humans created them in their foolish chimp-like minds to oppress others.
Although “fashionable” discussion started around 1953, the term resonates to Jacques Derrida — French philosopher, and disliker of the idea of an age of sexual consent for children. He was profound, despite not being able to understand Signs. With his dislike of Western “logocentrism” and his self-admitted “Marxist” concept of Deconstruction, his broader thesis was text could only be understood at all in the concept of competing opposites (which he also misunderstood from the original definition of a binary of being in the state of true or false). What a mind.