I've seen sisters on tv accept them. Cyn G was on BET with one as a guest like women issues are also her issues.
The worse possible thing for sisters do do is cosign their being women. It's already tough enough being both black and a woman. Helping them be legally, culturally, socially same will not end well. They'll end up taking any little benefits left and eventually, mark my words, will then have white men dressed as women getting all the benefits just like white women were the biggest beneficiaries of Affirmative Action.
Brittany Griner was cosigning them to be accepted into women sports. What little sympathy I had for her was gone. What's stop some white boy in HS cosplaying as a woman to get an athletic to an elite school like Northwester, Berkeley, Stanford in basketball, track, swimming whatever, taking both a space that could otherwise go to a sista, get a free education and then after graduation decide being a woman is not for him but he got a Stanford degree out of it.
Slowly but slowly, though, we are at least stop being publicly shamed into going along for fear of being called transphobic.
Be who you wanna be obviously but when you start taking resources and pushing agendas, then the line ends there.