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)
You can’t rationally debate someone out of a position they didn’t reach through rational consideration.
So you allow them to influence other people with their ideas?
It’s stuff like this why people in real life all share the same opinion on trans issues and other right wing issues. It’s this stuff that has allowed their arguments to spread. It’s a fundamental misunderstanding of what you were supposed to be doing. You gave them a red carpet and helped contribute to the spread of their propaganda by disengaging. Changing their opinion was not ever said as a goal. You need to challenge their opinion to show it is badly formed. If it isn’t then you need to evaluate yours.
I’m prepared to trust other people’s intelligence to see through it, and if they can’t, fuck them as well.