I think you may find this article of interest, it's a decent backgrounder to this point of view, and hopefully gives insight into why many left-leaning feminist women have adopted this view or are moving towards it:
Holly Lawford-Smith's book Gender-Critical Feminism expands on this in much detail. Kara Dansky's book, that you cited, is an enlightening read too, with more of a focus on US law and politics, as her linked blog post is. If you would prefer a more philosophical treatment of this topic, may I also recommend Kathleen Stock's work Material Girls.
https://hollylawford-smith.org/what-is-gender-critical-femin...
Holly Lawford-Smith's book Gender-Critical Feminism expands on this in much detail. Kara Dansky's book, that you cited, is an enlightening read too, with more of a focus on US law and politics, as her linked blog post is. If you would prefer a more philosophical treatment of this topic, may I also recommend Kathleen Stock's work Material Girls.