It's none of anyone's damn business what a trans people's assigned sex at birth was and we should stop assigning sex to people at birth. I feel like agab language is extremely violent and coercive and we should stop using it to medically assign sex to intersex and trans people at birth.
People are more complicated than binary categorizations and agab language fundamentally undermines people's ability to self determine their own gender.
Agab language is intersexist and transphobic and we could use a variety of other terms to describe medical, social, cultural and genetic differences present in trans and intersex bodies.
Someone is mullerian? Maybe they had a hypothetical future uterus transplant or went through traditional sex reassignment surgery. Agab plays fundamentally no role in who they are in the present.
Someone is intersex? Agab fails to capture the reality of their sex. That is by design from the patriarchy.
Someone is nonbinary? There is no reason to ask their agab. Don't be exorsexist.
I think postgenderism applies in this situation as the abolition of the gender binary and gender roles (but not the abolition of self determined gender). terfs and radfems fuck off.