So how do you propose deradicalizing nazis away from being nazis?
You can posture and say with violence but a lot of them are primarily just online, you're not gonna find every nazi. And that would just prove to them that you're the enemy and that fascism is necessary in their eyes.
You don't have to welcome nazis in your spaces but don't knock on debate as a tactic because that objectively does work when you force them to directly confront their own belief systems and the holes within it