I'm not a habitual user of the term myself, but I'm sure tempted to pick it up every time I come across these kind of disapproval circles. "Only stupid kids use the gross word!" does come across as a sign that it works as intended, "stupid" having overtaken a simple "bad" as a go-to stigma for use on the patronized when they get uppity. So maybe it's better to get in on the game before it inevitably loses its power from overuse.
As for the finer points of meaning, I see it as obviously semantically connected to "cuckoo", a bird that lays its eggs in the nest of another bird and lets the other bird hatch it like a sucker. It seems to be used for people who appear to be hatching ideologies hostile to themselves in their minds in a comparable manner, like self-hating men making a constant ritual display of "checking their privilege". So there's actually quite a perceptive analogy behind the development of this obviously very evocative term that belies simplistic kneejerk dismissals. But then, the knee tends to jerk when a nerve has been tapped.
As for the finer points of meaning, I see it as obviously semantically connected to "cuckoo", a bird that lays its eggs in the nest of another bird and lets the other bird hatch it like a sucker. It seems to be used for people who appear to be hatching ideologies hostile to themselves in their minds in a comparable manner, like self-hating men making a constant ritual display of "checking their privilege". So there's actually quite a perceptive analogy behind the development of this obviously very evocative term that belies simplistic kneejerk dismissals. But then, the knee tends to jerk when a nerve has been tapped.