They do have free will but where have you seen any depiction of morality as humans understand it? You also need to understand that a characters thoughts and actions are up to your own interpretation and do not necessarily reflect the authors opinions. Even if I were to disagree with Frieren the character as strongly as you seem to, then it still wouldn’t detract from my enjoyment of the show. I don’t need my entertainment to regurgitate my own morals to me.
The morality I speak of is the one of hierarchy and magical power. The fact that they have both a moral system and free will means that they can chose to adopt another moral system. Frieren can’t know if every demon follows the same system.
They do have free will but where have you seen any depiction of morality as humans understand it? You also need to understand that a characters thoughts and actions are up to your own interpretation and do not necessarily reflect the authors opinions. Even if I were to disagree with Frieren the character as strongly as you seem to, then it still wouldn’t detract from my enjoyment of the show. I don’t need my entertainment to regurgitate my own morals to me.
The morality I speak of is the one of hierarchy and magical power. The fact that they have both a moral system and free will means that they can chose to adopt another moral system. Frieren can’t know if every demon follows the same system.