I'm fine with gender critical. Maybe it's because I remember when the usual word was 'terf', which was an insult and a threat. At that time, people wanted to be called gender critical. TRAs used to say 'gender critical is a euphemism for terf'.
Gender critical is appropriate because it means a) critical of gender stereotypes and b) critical of genderism. All feminists should be against gender stereotypes, and obviously in my opinion, they should reject genderism as well! Since it's based on gender stereotypes.
The problem we have now is that 'gender critical' is being used for anyone who opposes genderism, including social conservatives who're fine with gender stereotypes, so long as they attach to the conventional sex. But I'm not sure what we can do about that.
I'm not a 'gender abolitionist' because gender is about social roles associated with sex, and sometimes you need to differentiate between women and men, like in sport, or crime statistics, or changing rooms.