I mean, this is not true? Impressionable young people raised in racist environments are impressed by racist arguments - whether emotions based ones or pragmatical ones.

Simply said, own supremacism feels good. Even if you know it is based false argument it can still feel good. Compliments do feel good even if false. It is definitely not a threat.

Also, my own supremacism is practically beneficial to me. I gain from that even if if is based on false arguments. That makes the supremacist arguments much more easy to accept.