If we examine it properly, there is no difference between trans-racialism and trans-genderism. None. Race is a material reality, as is biological sex. Black people have been oppressed due to their skin colour, not because of their culture or the clothes they wear or whatever. Women have been oppressed due to our biological sex, not our gender identity. The thought that a white person should be permitted to call themselves black is grotesque to the majority of black people. It's laughable- they are part of the oppressor class and have had the benefit of being white throughout their life. But when the same happens with men and women, we bend over backwards to try to deny that biology is a real thing.
I feel sorry for RD and I feel sorry for people with gender dysphoria. I hope more trans-racial people come out of the woodwork in order to expose the trans-movement for exactly what it is.
I have never heard a single convincing argument as to why trans-racialism is different to trans-genderism. Because there is none- they are the same thing and they are highly problematic for the same reason.