When you say 'pregnant people' you invalidate the gender identities of all women who identify as women because they have biologically female bodies, and you turn the female body into something gender-neutral. When the female body has been made gender-neutral it becomes impossible to talk about the female biological sex and then it becomes impossible to talk about the oppression women face which is based on sex.

So something which is supposed to be 'inclusive' is actually anything but inclusive, because it invalidates the gender 'identities' of the vast majority of women and because it tries to make feminists work in the future impossible. But then 'inclusivity' comes from queer theory and never was intended to be about fairness. It is intended to destabilise and destroy the concept 'woman,' and it is succeeding. Oddly enough, it is never aimed at destabilising the concept 'man.'