PS I am not going to laugh as you are a historian and we cannot expect historians to know much outside their narrow field.

What's yours?

Lmao at thinking history is a narrow field

Not so fast. You said gamete production was determinative. Here we have an example of an animal that starts out producing and later switches to producing sperm. On what grounds do you say it’s one sex and not the other?

If you contract an agreement with someone to deliver them a hen, and you turn up with a bird that looks and sounds like a rooster and can't produce eggs, do you think they'll consider you to have fulfilled the agreement?