Asklemmy

There are about 20 different ways of assigning someone a description of "male" or "female" - examples are the gametes someone produces, their genitals, their hormone levels, or how their brains are wired. Other species can have more than 2 genders or change from one gender to another, and it could be argued that mushrooms have hundreds of them. There are also organisms which have both male and female characteristics in the same body - in some cases, they have both genitals. The natural world is a messy place when it comes to gender, and there are no rules.

Humans like to define things, give them names and put them in neat little boxes, but nature isn't like that. Nature doesn't give a fuck that humans like to assign people one gender or another. Nature creates people who have some male and some female characteristics because there is no natural rule that says everything has to be one or the other. A person with male genitals can have a brain wired up in a female style. Their brain says they are female, but they were defined as male at birth. These are the people who society fails miserably in its rigid adherence to the philosophy of male/female, in a world where this distinction does not actually exist.

The words "biologically male" are loaded, creating an assumption that such a thing is easily definable, and that a person must be one gender or another. This is simply not the case.