Edit for context:
My view is transracial isn’t valid and this person is trying to dogwhistle. I’ve already blocked this person, and now they’re going after my friend saying my friend is transphobic because they disagreed with them about transracial being a thing (they’re purposefully leaving the context out so my friend looks transphobic when what my friend really said was transgender is valid but transracial isn’t)
They don’t appear to understand the difference between cultural and gender identity. I’d try this:
“If a white person of european descent were raised from birth by a Sentinel Island tribe, would they be culturally european?”
The answer is obviously no, illustrating that the cultural identity of a person depends on the culture the person was raised in. I don’t know how gender identity works, but clearly how someone is raised has little to do with it.
Edit: Disclaimer that I have absolutely no idea what I am talking about.
Problem is that “race” isn’t just cultural. How you will be treated definitely depends on how other people perceive your “race” and subsequently it will shape your life reality.
That person you gave as an example? In the US, Canada or most European countries he will be treated better than an actual Citizen born and raised in the respective country who is perceived as “black” or “brown”.
But surely how you will be treated definitely depends on how other people perceive your “gender” and subsequently it will shape your life reality?
Everything you described up there sounds exactly like “cultural.”