Should we dispense with the word gender critical and just call ourselves biological realists?
For me, I just call myself a feminist.
The version of feminism I espouse, teach & try to live, is one which recognises the distinction between sex and gender, seeing gender as an historically & culturally constructed system which coercively requires certain characteristics, roles, behaviours of individuals, based on their sex. And these gender roles are hierarchically valued, and oppressive of women and girls.
Feminist analysis gets into that gap between sex and gender, to argue that just because women are biologically programmed (large gametes) to conceive, gestate, and feed infant humans, doesn't mean we can't do anything else, or that we are incapacitated or lesser in all other aspects of being fully human.
So that position recognises sexual difference but avoids the biological essentialism that the women's movement of the 1970s (second wave, if you like) found so troubling.