He's a trash dad, but also kind of an incompetent politician?
She just asked he not mistreat her brother and mother. Even if he wanted to cut off their ties as father and son, he could just say that without being an asshole about it.
Also, again, what the fuck kind of security was that archdemon supposed to be?
And why did it take so long to perform the appraisal?
I wonder if his aptitude is really like that or if they all started at F but he grinded his only accessible spell up to SS.