No it isn't.

You are talking about reproduction and genetic sex, yes, it's binary in humans.

Biology is more than just that, ihormones level, body structures and sizes..

There are Cis woman with functional reproductive ability that have more testosterone than some men also with functional reproductive ability.

Yes, so? What's your point?

I know how reproduction works, but I don't get your point.

Are you saying that if you can't procreate then you are not a man nor a woman?

The idea that biological sex is binary is just plain wrong too, it get confused with genetic sex

it is a nice feeling, isn't it? 😁

me too