I'm pretty sure you are correct in what you just said. And yes, I treat Genesis as a creation myth. Many believe it is the only one because it is the only one they're aware of. But there are many others. Every distinct culture had the same questions about life and took the same steps to answer them. These myths show our common thinking, right or wrong, but usually based in the knowledge they had at the time.
They knew men had some of the same parts as women and vice versa. So how could they explain how each gender came from completely different creative thoughts? If the original intention was to make "man and woman" then there is no reason men would have nipples that don't function as mammory glands. We still don't know for certain what the appendix is for! LOL. People theorize that it used to do something but is now no longer needed. But biologically, there's no such thing as pure man or pure woman. We are all a mixture of each other and that mixture can get mixed up.
I remember when I was a kid and first learned what a hermaphrodite was. The very idea was so gross. It still is, but I'm an adult now so I'm able to have empathy for their situations; understanding that they were born that way. They didn't choose it just like I didn't choose to be black. So if they want to have a surgery to fix it? Why not? Go ahead! Pick one!
But which one would they pick? Are they man or woman? If we're deciding this based on their physical genetalia, I mean. Then what are they? Are they both? Or neither? How do they know they're not a woman if they choose the male reproductive organ? How do they know they're not a man if they choose to keep the female reproductive organs? How does anyone credibly know if they picked wrong? So how can anyone, but them, decide which gender they belong to? Now, this is obviously an extreme case. But if hermaphrodites truly and clearly exist then why isn't it also possible that a person develops different sexual organs than what their brain identifies with?
I mean, are we saying that all women behave the same just because of their physical parts? Do all men behave the same based on ours? Do we not typically associate certain behaviors observed in men to be more like that of a female? Maybe he's "too sensitive". And sometimes masculine behavior is taken to an extreme to the point it becomes toxic.
So there seems to be a spectrum of masculine/feminine that exists without any respect to the physical nature of the person. I know a lot of women who have a strong masculine side. And I don't simply mean that they are "too strong". No, I'm saying that you can tell in their behavior that they're more like guys. Sometimes they can also be very feminine at times but of course, they've also learned how to be from watching other females. Gay men learn how to be in the closet by watching other men. But they know they're acting. It doesn't come naturally to them. So it reinforces the idea even more that they aren't normal. And sometimes they go all the way in their mind's gender identity and they come out as gay or lesbian. Or they are bisexual and are able to love both genders. Many people who can love both genders simply don't choose to; don't explore it. And a lot of people don't explore it for social reasons, because it's "taboo". Or was.
So I think a lot of people have been wrestling with thoughts of attraction where before it was simply socially illegal. So I don't think people are choosing to be this thing or that. I think they already were before there was even a label or definition for it. And now that there are surgical options, they are trying to match their outside to their inside.
Is this true in every case? How can anyone know that? Maybe some people want to do it for attention? But there are much easier ways to get it. So who knows? I just think the more we understand each other the easier and better we will all get along and get to a place where we can love each other. Because love doesn't have to be sexual or physical. There is a component to love that is genderless and asexual, right? Some of the men in the bible kissed each other (presumably on the cheek) and expressed their love for each other and because of toxic masculinity they are called gay. David and Jonathan were not gay. They were just very good friends. I love my male best friend too. Are we gay? Hell no.