Can you honestly not imagine a world where cis women disagree with you?
Don't be daft, @Canadanian - really know anyone voluntarily calling themselves a cis woman isn't going to agree with us.
Inserting that space in the middle of 'transwoman' to pretend that Woman is the noun and Trans is the adjective also tells us you hold a belief system that gender identity is significant.
We tend to assume that rational women posting on the sex and gender ghetto section of FWR have enough concern for women's rights to not include males. But there are a smattering of gender believers around, and that's all well and good.
I'm getting on and my protesting days are over due to arthritis, but I and many of the posters on this board have a history of activism, Reclaim The Night walks, standing outside Marie Stopes clinics (when closed) to counter protest the anti abortion nutters, volunteering at collections for shelters and on helplines.
Like Ms Rowling, many of us here have years of defending women's rights behind us. This misogyny wrapped in a progress flag is just the latest attempt to keep women down.
We're fighting for your rights too. I sincerely hope you never have cause to need it, but if you do, we'll be there.
Feminism is for all women, even the ones we disagree with. And not for males.