But you do realise it’s possible to jump into an aircraft and fly it into an airport without being the holder of an ASIC or even a pilot’s licence?
There is no bubble around security controlled aerodromes that is impenetrable to an aircraft flown by a person who has no ASIC or pilot’s licence. People like “terrorists”.
And those people are not going to land and wait for the AFP to turn up and check. They just crash the aircraft into the PM’s taxiing jet.
If you don’t mind the cost and inconvenience of the facade, good for you. Others mind.