We need to take away AGAB terms from perisex people until they actually understand anything about intersexism. If i see another "AFAB people when they..." to be a stand in for "biological women" or "people with uteri," or "TheyFABs/TheyMABs are..." (THAT ONE IS ALSO TRANSPHOBIC? INTERSEXISM TRANSPHOBIA DOUBLE WHAMMY WHY ARE YOU SAYING THAT) I'm going to lose it.
You're assigned a sex congruent with your perceived gender at birth by a doctor. They assign you a gender at birth. This is something outside of literally everybody's control. A doctor assigns you a sex at birth. And if you're perisex, then congratulations! Your biological sex is deemed matching to the gender you were assigned at birth and you are the socially correct circumstance. You will not be subjected to the same medical mistreatment as intersex people! Intersex people are forceably assigned a sex at birth that may or may not correlate with either their genitalia or what is socially expected of their puberty milestones. Medical decisions for the rest of their childhood, even for the rest of their adult lives, will be made without their consent, against their will, or they will be coerced to agree to them, according to their assigned gender and sex at birth in order to "fix" them rather than having their best medical and personal interest in mind.
"All AFAB people..." someone might be AFAB and look how you you expect a biological perisex man to look. Might have a penis on top of that. Their genitalia might have characteristics of both sexes. "AMAB trans people..." trans intersex people exist. I assure you their experience might be leagues different to a perisex person AMAB. What you are saying doesn't mean what you want it to mean. If you're talking about genitalia, specific surgeries, a specific HRT, just say that. No one is going to shoot you down if you say penis or vagina.
I've started to see medical commercials use AGAB language in them, which is so absurd to me. It's not even medically accurate to advertise it like that! There are people AFAB who need estrogen HRT to pass as women. There are people AMAB who need testosterone HRT to pass as men. AGAB terminology is also oppressive, which is kind of the point of it existing. An intersex person talking about their AGAB reveals absolutely nothing about their body, which is why AGAB medical practices are criticized. Because, and I cannot stress this enough, it is not a socially progressive term as a stand-in for genitalia. The entire point is actually that assigning a binary sex should not be a standard medical practice since sex is not binary. When you use AGAB terminology in these ways you are literally reinforcing intersexism, sex binaries, and gender binaries. That is all you are doing. The terminology you are looking for would be: penis, vagina, uterus, urethra, ovaries, clitoris, androgens, testosterone, estrogen, perisex, intersex, and the wide range of terms for variations in genitalia.
The correct usage of AGAB terminology would be related to medical malpractices associated with those groups, medical oppression, or if you are intersex describing the ways in which your body has been misrepresented or mistreated because of that label. It would be if you are transgender (maybe even cisgender in some cases!) and experiencing medical oppression because your AGAB is restricting your medical autonomy. If an intersex person is actually talking about their body they will, again, be using anatomy terminology or dropping the name of the actual condition/syndrome/variation they have because AGAB DOES NOT MEAN ANYTHING SINCE SEX IS NOT BINARY. AGAB IS AN ARBITRARY LABEL MEANT TO RESTRICT AND HARM.