I don’t think it's kind to expect a woman to see a man as a woman. - Sall Grover

While there are a number of trans-only apps and straight women don't demand access to, say, the gay dating app Grindr, activists want Giggle removed from the Apple platform. They claim its software reads black women's faces as male. Grover says her users are women of all races from 88 countries and this is a vicious slur. Their true motivation is her female-only policy. It enrages a movement whose idea of activism is getting domestic violence refuges defunded for remaining single-sex; which can’t abide women having one damn thing.

It's always been you can't discriminate against anyone except when you can … (because it is) for a positive reason for that group.
Female only spaces have existed for such a long time and there has been no controversy in it.

[W]hat's the point of even having a category of woman in law if it's not defined as 'biological adult human female' if it's just a category any man can become. [...] It's meaningless.