Not commenting on any particular cases under discussion, but you've got to have some form of regulation or there'll be people doing all kinds of dodgy crap without any comeback if anyone gets hurt, and in our increasingly litigious society if they don't write the rules in legal speak to take out loopholes, then they won't work.
It seems many people won't accept that CASA could possibly do anything good whatsoever, and the only solution is to sack them all. What do you replace them with, though?