I feel like that’s giving them too much credit, The demons in Frieren aren’t immoral they’re just ammoral, they straight up don’t have a concept of morality or empathy except from an external point of view as this strange human behaviour they can manipulate. Fascist on the other than are human and do understand morality and empathy and then choose to ignore and weaponize them anyway, they have so much more malice than a fictional demon.