I just explained it to you. Think of him as the messenger, delivering a message from Trump. That might help simplify if for you.
I’m not going to get into some weird circular thing with you because you feel like being obtuse. The President, ANY President calls up someone and says, please go fire this guy I need him gone. SO he does so. If the twit being let go thinks they can stand on ceremony and say he isn’t a government employee, they’ll get an education about 2 minutes later.
Think of it as a letter of Marque and reprisal.
So you are saying that trump can tell melania to fire bannon..and that person is fired when she does it??. Somehow I dont think that is right but I dont know fed regs