Knowledge and experience aren't needed
All he needs to know is how to hire "experts" and manage them. And how to toady up to the politicians. Oh, and how to take bungs without getting caught.
Which reminds me of a comment made by a real engineer during my early days.
Rolls Royce went bust the first time because it was run by engineers who didn't have a clue about management.
Rolls Royce went bust the second time because it was run by managers who didn't have a clue about engineering.
Obviously, such concerns only mattered in the private sector in the past. These days top management know to ensure they have a golden parachute before destroying the business by their ineptitude. In the civil service golden parachutes come as standard.