I say this as a black trans woman.
The same way there are liberals whom get offended at the idea they could hold racial biases because they “don’t see race”
There are queers who get offended at the idea that they could possibly contribute to Transmisogyny because “gender isn’t real.”
Like yeah, in an ideal world none of those things would matter, but the fact of the matter is that society is racist and transphobic, with a particular hatred of black people and trans women.