Here’s a real life example. I recently had the following conversation with a (generally bright) 9th grade girl:
Her: But there’s more than just two genders.
Me: What genders are there other than boy and girl?
Her: There’s eighteen or more.
Me: What do you call someone who’s neither boy nor girl? it?
Me: Can someone who’s neither boy nor girl get married, and if so who would they marry?
Her: I could marry a person of non-binary gender.
Me: That’s a curious thing. Ten years ago the vast majority of people would have believed that a person who claimed they were neither boy nor girl would be in need of psychiatric care. Why do you think that has changed?
Her: Because people today are more open minded.
Me: Well, most people today would think that a person who believes he’s a giraffe would be in need of psychiatric care. Do you think someone’s giraffness will be affirmed as a healthy thing in ten years if people become even more open minded?
She was so scandalized by the ignorance and insensitivity of her teacher that she called her 10th grade, social activist friend (a non, non-binary boy) to talk to me after class. He was quick to explain that sex is defined by anatomy, but gender is only something made up and imposed upon people by society. The slightly more sophisticated would say that male and female differences are no more significant than differences in height or hair color. Therefore, masculinity and femininity are purely social constructs—created, of course, by bad people (usually men) whose motive is to use gender roles to oppress others (usually women, and effeminate males). So, in recognizing the distinction between sex and gender, we are freed from oppressive gender stereotypes.
Pretending that masculinity and femininity are not inherent qualities in men and women does not free us from oppression. Before I speculate on what it does free us from, I’d like to pose a few questions to those who think gender is made up:
Is the idea that a father should be a protector and a mother a nurturer just a meaningless prejudice?
Do you really think the fact that the overwhelming majority of police officers and combat soldiers are men is due to artificial social norms and not a reflection of inherent qualities in most men which are not present in most women? What about the same point as it applies to the fact that an overwhelming majority of kindergarten teachers are women?
In any case, the thing we are freed from by a gender identity free-for-all is not oppression, but sanity. The real sickness in transgenderism is in the idea that people should be able to create their own fantasy world without being hindered by reality, and then demand that everyone else accommodate their delusion.
When I say the acceptance of transgenderism is insane, I mean that in a text-book sense. Insanity is defined by an absence of objective definitions. Sane people are sane because they recognize fixed boundaries of reality and meaning. Two sane people can argue about the species of a tree, but a sane person cannot argue with a person who thinks a tree is a dog. No one can live in a world where people determine what a thing is simply by declaring it to be so, and this is no less true when we want to make false declarations about ourselves. To try to do so will result in a world where people are “free” to take an elm for a walk and use a terrier for firewood.
If a human being has testicles and testosterone I will not call him a female, or a “non-binary,” for the same reason I will not call him a Bassett Hound or an Douglas-fir. I know some guys feel like they’re girls; sometimes I feel like I’m a Navy SEAL, but in reality, I’m not. And if someone respects the fact that I identify as a Navy SEAL, they are not loving or tolerating me. They are contributing to my demise. Also, if anyone thinks this is just backwoods Bible thumping, consider Aristotle's thoughts on telos and entelechy. We don't need a theological education to know that a thing is what a thing is.
I’m sure there are many people confused and conflicted about their gender identity by no fault of their own. I’m sure there are effeminate men and masculine women who are, generally speaking, better people than some very manly men and highly refined ladies. Those who are conflicted about their gender and sexuality should be loved and cared for, and those who don’t share their struggles should have all the more sympathy for that reason. But the worst thing to do for people struggling with a disorder of that kind is to pretend that it's not a disorder. It’s hard to imagine something more degrading to a human being than to accommodate their delusion and deny them the dignity of correction.