All cows have visible udders and are all milkable, despite the fact they are considered gender-neutral.
All chickens can lay eggs, there are no roosters.
Interestingly, there are no male mobs. Are men not supposed to exist?
Piglins are humanoid, hoglins are animalistic. Are males more of animals and less of humans than females? /s
Seriously though, we can make a [censored]storm out of everything, and Mojang wants to circumvent this by setting nearly all mobs to gender-neutral.
I don't want to get my boots into this political swamp of implications, neither does Mojang, so I and they alike will shoot down any proposals like this one.