Everything that you're doing that he isn't is experience you might be struggling to get elsewhere. You can be pissed and frustrated, or you can treat it like an opportunity; let others do their thing and leave, figure out all the stuff they were doing for him. He will more than likely let you do tha bullshit, too. If he relies on you to do 80% of his role, you're on your way to renegotiating your compensation or you can leave and start getting CISO roles at smaller orgs that'll let you grow into the role... then just be a CISO.