nonbinary.wiki/wiki/Assigned_gender_at_birth
Surely no matter how gender uncritical you are, no one can agree that girls are "assigned female at birth" based on their lack of a penis.
. I won't get in to "what they consider a penis" for now.
that deserves a thread of it's own. But the sheer misogny of women just being humans who lack a dick.
Assigned gender at birth is what people usually really mean when they speak of a person's sex. This is because a person's sex is much more difficult to determine than most people believe. When a person is born, a doctor assigns a gender by only looking for one thing: the presence or absence of what they consider to be a penis.