I was actually thinking about this in the shower this morning.
Specifically in terms of early onset gender dysphoria in boys, which seems to manifest itself as boys playing with the "wrong" kind of toys and wanting to dress up in the "wrong" kind of clothes.
This is what Susie Green describes as being the earliest signs that her boy was actually a girl, and she says she thought he would probably grow up to be gay and she would have been OK with that but her husband wasn't.
There's so much to unpick there.
Firstly, the idea that the toys and clothes a young child likes might be a reliable indicator of their future sexuality. Now, I don't know whether this is true or not. Maybe little boys who like to play with dolls and dress up as princesses are more likely to become gay adults. Maybe they're not. Who knows.
I can see the logic for why we give little girls dolls to play with. Women give birth. Little girls will most likely grow up to be women who give birth to the next generation and so giving them dolls to play with is a way of preparing them for that role. So, as twisted as it is, there is a certain logic to the idea that dolls are for girls.
But if observe that your little boy likes to play with dolls and you assume that he is likely to be gay, what does that say about you? Is this just ingrained heteronormativity? Being attracted to male partners is a womanly thing, playing with dolls is a girly thing, so a boy who plays with dolls is doing a girly thing which is an indication that he will grow up to do womanly things such as being attracted to men? Huh? That's fucked up. A doll is just a doll.
Secondly, it isn't being attracted to men that makes you more likely to have to care for a baby as an adult. It's having a uterus.
Arguably, the children with the least need to train for future parenthood by playing with dolls are boys who will grow up to be gay men and children of either sex who will identify as trans and medically transition. Because these are the children least likely to ever become parents themselves.
So if you see your son playing with a doll and worry that it means he will grow up to be gay, firstly, that's homophobic, and secondly, aren't you rather ignoring the fact that boys who grow up to be straight are actually much more likely to become fathers and end up bottle feeding and changing real babies?
There's just no logic to these ideas. Wherever you choose to dig down into them, you find old fashioned homophobia and sexism, i.e. stereotypical gender roles for men and women, and gay = bad.