I suppose non-binary, or gender neutral is quick and effective shorthand for saying do not treat me as a definite male or a definite female.
People will pause to think.
Yes, most people are non-binary anyway. But perhaps it's a useful way of pointing it out.
It might, just might make people think about the way they treat us based on our sex.
Which is what feminists want.
Unfortunately, in real life, it seems to be mostly youngsters, who are completely and utterly defined by this label. Or non label. And it's not a neutrality, it's a specialness.
It has the result of saying yes, don't treat me as a definite male, or a definite female, but you must still treat me as a definite something.
But that something has no real definition, it's nebulous. But I am going to force you to run round in circles and give it attention.
So on paper, it looks interesting, but in real life it really, really isn't.
And as most people can tell if someone is a male or a female, they will still get treated accordingly.