notyoda and bev i don't agree at all.
Trans activists won't accept any similarity between the two not because they cannot "take on" the all powerful black community. That's absurd, as is the idea that race is prioritised or listened to always over sex - as someone who is both I can confirm it is not.
The reason the trans activist community will not embrace Rachel Dolezal is because the trans activist community is made up of many many politically minded young black and brown women and anti racists.
Kimberlé Crenshaw's idea of intersectionality has widened to include the intersection of being, say black, female and gay etc... and of course female and trans. The idea isn't useless per se - feminism has conventionally excluded a lot of women but now intersectional feminism's loudest voice is the trans woman. And intersectional feminists'll tell you that proudly. "My feminism will be intersectional or it will be bullshit" is a direct @ mention to feminists who question transgender theory or dare to question the safety of sex work, with an addendum to feminists who ignore brown women.
So intersectional feminism, those loudly advocating alongside the most extreme TAs being made up of brown women will have a lot to say about Dolezal, of course. Naturally. And the trans community themselves will see the difference between themselves because race is still "a fact". No one but RD has yet decided that race is a feeling in a white person's head. I mean, it's not very "done" to deny someone's claims to call themselves a certain race - but that doesn't yet extend to people with no heritage whatsoever. The meaning of woman has, for now at least, changed to be based on ideas and thoughts, sexual biology has been cancelled for the moment and is a meaningless aberration, having as much significance as whether you have a chin dimple or not.
So imho the cancelling of sexual biology against the current reality that race means something, coupled with the intertwining of feminists of colour showing solidarity with another activist community is why transactivism wil not welcome trans black.