"They" has been in the dictionary a long time now and it used to be a gender neutral term for equally as long. It fell out of favor in the late 90's and now it's back again but for completely different reasons. Back then it was because you might not know the sex of the person in question so it was "they". Now it's the troon who wants to larp as something else. But beyond that, it's funny to see them explode when you misgender them.
I sometimes wonder what kind of alternate universe these people live in? Yeah I hear about this all the time, "when you're 18 you're gone" but I've never actually met a person that this happened to.