Firstly, maybe I’m a pedant but sex is assigned before birth. Very helpful in screening for genetic conditions, not so helpful when it results in female infanticide.
So even with a belief in gendered identity ‘assigned at birth’ is a nonsense.
Secondly, if our sex, our chromosomes and genitalia have nothing to do with whether we are a man or a woman we should not give our children gendered names or refer to them as a girl or boy until they tell us what their gender identity is.
Hannah and Jake Graf celebrating the birth of their daughter said ‘finally she’s here’. How do they know they have a daughter?
Surely they should be using gender neutral pronouns. She may not be a girl. Are they oppressing her and projecting their transphobia by calling her she by making assumptions based on their child’s sexual characteristics?