Functional as in being able to produce sperm and have the interior male organs that support the ability if one isn’t working
You’re trying really hard to make this confusing when it isn’t at all.
We know what men are from their chromosomes, biological markers, genitalia, organs, etc all of it. The same goes for women. Nothing changes that. We dig
Up bones of ancient people and know exactly if they were male or female
We live in a gender binary that occasionally has genetic deformities. You deal with those as they come, but you’re over here very confused and desperate, trying to poke holes to change a definition.. that won’t work for you
This is very simple.. I’m surprised you can type on a computer yet are unable to grasp this elementary concept