All of this.
A few points:
Every time a white person pretends to be black, they pick and choose the aspects of blackness they like and discard the burden, every time, they profit from it.
Rachel made money giving speeches. She mentored kids who now know that her messages of what they could be and do despite their blackness rings hollow, because she played with her idea of what she, a white woman, thought of their lives.
She wasn't just born a white woman. She is a white woman who lived most of her life with privileges and got bored or whatever and decided to put on a costume, to play act the real pain experienced by millions of people.
Ask yourself would you be upset if someone pretended to be raped, became the head of an organization against rape, and frequently gave speeches about her recovery only to find out later that she was never raped?
Imagine how real victims of sexual assault who took inspiration from this person would feel finding this out.
Would you defend that person because of all the good they have done?
Would you call them a transrape survivor?
Transpeople aren't using other people's pain as a fucking costume and in fact assume MORE violence, risk, and social difficulty in the pursuit of matching their exterior to their interior.
This bitch, took all the bits she could use to advance herself within the community she was invading and none of the burden.
Remember that as a white woman, she could only pretend to be the lightest black woman, and that in and of itself is selecting privilege.
Really the worst offense, beyond the blackface, and appropriation is pretending she got the systematic and personal abuse of those who experienced it for real. I can't imagine the violation those she mentored feel. Beyond disgusting.