You don't argue with fascists; you chase them into the darkness and put the fear of existence itself in them. You're not going to "prove" anything to fascists because if these people could be reasoned with they wouldn't be fascists.
You want to keep pretending this is "politics" and you're arguing with folks who're literally about eliminationism and committing violence against people who don't agree with their nazi bullshit
There is never going to be a moment where they understand you're right