They get traumatized because medical professionals can't flip a switch in their brains and stop using women centerd language, or memorize a TIFs made up names for reproductive organs. A TIF might have to hear the words "your uterus" or "your cervix" and crumble into a heap of dysphoria.
No "transman" has ever been denied an abortion because of her status as trans. Trans people have nothing important or unique to say on abortion.