I have a biology degree. I took developmental. The textbook is right here on the shelf next to my desk. I am perfectly well aware of how embryonic development of the sexual system in mammals works. Incidentally, you’ve managed to get it wrong, but I’m not going to get into it here because it has nothing to with the point in my post which was about reading comprehension and what the text actually says. The definitions contained in the text of the EO read:
(d) “Female” means a person belonging, at conception, to the sex that produces the large reproductive cell.
(e) “Male” means a person belonging, at conception, to the sex that produces the small reproductive cell.
The structure of the sentences clearly indicates the ‘belonging’ occurs ‘at conception’, not the production of disparately sized cells. When the production occurs is not specified at all and nothing in the definition depends upon when it occurs, merely that it does at some point. This creates it own set of problems, but not the ones everyone is pointing and laughing at.
The text provides some clarification for how they want the classification at conception to work which, definitely yes, is hot garbage and creates more problems than it “solves”, but that doesn’t make it not say what it says.