Or thinking further, we need to stop a) conceding ground within feminism and b) setting up a battleground between feminists.
I'm not a GC feminist or a radical feminist, I'm a feminist. Anyone who claims to be a feminist but isn't GC is not actually a feminist.
Why have we effectively split the movement and conceded that there is more than way to be feminist?
How can we expect future generations of girls to understand what feminism is if we effectively offer them a pick-and-mix of different varieties of so-called "feminism", some of which centre men?
We are feminists, not a particular flavour of feminism. In the same way that we are women, not 'cis' women.
In reality, self-defining as gender critical feminists is not dissimilar to being identified as 'cis' women - both suggest there are other, equally valid ways of being feminists and/or women.
And I don't think there are. We shouldn't need a separate sub-label. The label is used to attack and weaken us as a group - divide and rule. It draws attention to the divisions among feminism and not what we share.
T* as a term of abuse has worked successfully as an attack precisely because to the uninitiated, Trans Exclusionary and Gender Critical do sound like very similar things. If you don't get that gender is imposed on us and think of it as innate, particularly given the confusion in most people's minds over gender and sex, then being "critical" of gender does sound like we oppose people we see as being of a "different gender".