We have often wondered whether “our” pollies are just mad, evil, and/ or on “something.” We do not have any data for Australia, but there is some American material that may shed some light on the matter:
https://www.naturalnews.com/2017-10-15-pharmacist-who-shuttles-carloads-of-pharma-drugs-to-congress-admits-theyre-senile-brain-damaged-patients-who-might-not-even-remember-what-happened-yesterday.html
https://www.statnews.com/2017/10/11/pharmacist-congress-drug-delivery/

“Mike Kim, the reserved pharmacist-turned-owner of the pharmacy, said he has gotten used to knowing the most sensitive details about some of the most famous people in Washington.
“At first it’s cool, and then you realize, I’m filling some drugs that are for some pretty serious health problems as well. And these are the people that are running the country,” Kim said, listing treatments for conditions like diabetes and Alzheimer’s.
“It makes you kind of sit back and say, ‘Wow, they’re making the highest laws of the land and they might not even remember what happened yesterday.’”

     These are exactly the sorts of people that the elites want making laws, because they are completely manipulable. I would suspect that the same, if not greater, degree of mental illnesses exists among our own crazy bunch of pollies. Maybe the Aussie batch are much worse.