Before I start I should say that I'm the kind of person who furiously writes "MY SEX IS FEMALE" on doctor's forms that ask for gender with a free text form. I get why it's important to be clear, and not risk using language that might be re-interpreted to mean "gender identity". I know the history of the term gender in feminist analysis.
But lately I've been wondering whether that's ceding unnecessary ground?
Particularly in the US but to some extent here as well, there's a clear backlash and return to normality on the trans issue. But, possibly because in the US the "GC" movement is less feminist-led and more "common-sense/realist"-led (for lack of better terms, and not to imply they're at odds with each other!), I see a lot more people just out-and-out saying "THERE ARE ONLY TWO GENDERS". (Or for example, see the Trump day 1 ruling which we've been discussing.)
And part of me is trained to think "no, no, there are only two SEXES, be clear!" - but another part is increasingly thinking "you know what, yes, there are only two genders, and gender means sex, and why are we complicating this?"
And then I go on to think that it's ceding ground to throw our hands up and say, fine, yes anywhere you see a government ruling/law/etc that says "gender" you should assume it means "gender identity" and not "sex". I think it's very hard to translate to normal people when you have a campaign for something like "Petition to change the word gender to sex in the NHS forms" (etc). Because honestly, they mean the same thing to most people who aren't involved in the TQ++ or GC worlds.
Very fair to continue to talk about "gender roles", "gendered expectations" etc in the context of feminist analysis, but I don't think anyone is seriously still using the undecorated word "gender" to refer to this in the 1970s sense - it's not worth "saving" it for use in that way when more explicit terms can be used instead.