I hope it's the current use of ironic to say-
I find it ironic that the group who think the current practice esp with teens but also plenty other people, to consider, choose, create, agonise over labels that encapsulate certain aspects of their personality/ who they are...
Are having a (interesting!) pretty involved conversation about what label we should give ourselves 
Imo and what I've seen-
- Most news articles etc that are not by activists of either 'side', general use. 'some feminists', 'women's groups' etc. That's fine.
Note: Really interesting it's always women. And/or feminists. When clearly plenty men are either active in sex > gender, or are... Any/ all bog standard men across whole society. Bar a number so small at population level is irrelevant.
- The label is irrelevant. One positive sounding will simply be ignored, altered a bit too sound evil etc. Plus it's the people who have the label that are the focus. Changing labels does not change attitudes. (Example- nasty words used for people with disabilities. If underlying issue not addressed, label changes nothing).
- I only heard of GC when this started. Read feminist term fair old while. Doesn't properly fit though. It's about thinking enforced gender roles/ stereotypes etc are really constraining and damaging to pretty much everyone to some degree.
The fact it can easily be claimed to mean critical of trans people is why used so much... Was it feminists/women who said call us this loads of us are that? Or because v appealing to be pushed by others as easily misunderstood?
- GC not so popular now still around s lot but others moving in. I've seen-
Biological essentialists
Forgot other it was upthread!
In end.
Those who disagree will use whatever terms they wish. Look at anti trans activists. Popular. Applied to us, and incorrect.
GC is not actually a suitable term for knowing sex > gender anyway.
Same as TE*F, all are radical feminists if they know sex matters? I mean lololol don't be so silly!
Given generally media uses reasonable terms predominantly.
And as a large scattered group who happen to share a big wtf on this issue, not an organisation in any way.
It would be really hard to get one suitable label. It will only be used on Twitter etc if can be twisted. And getting it into mainstream use, incredibly hard.
Let's focus on facts. Not labels. Imo.