I am not one for pseudo science mumbo jumbo, but I did once read an interesting article from an aviation psychologist (I am sorry, I have forgotten his name) who postulated that the social and decision making dynamic of the government body may well come down to something as simple as the name of that body.
From my dealings with them I would suggest that there would be something in that theory. There is so much overreach from CASA and them believing that they are basically flying the plane or running a airline from Canberra it is ridiculous.
A 'Safety Authority' vs a Administration are poles apart in terms of who is responsible.
Personally I would have thought that David Leyonhjelm might have gone onto CASA because this is right up his alley however he seems a weak when it comes aviation matters.