Having lived aboard permanently since 2001 and hung about with the less exclusive end of the yachty spectrum for about fifteen years prior to that I have a fair collection of live aboard versus authority stories.
One of the best is about a guy in WA who anchored in a creek surrounded by the housing of the nouveau riche and the expensive battle against him it required to lawfully get him moved and another about the blue feral in Horseshoe Bay on Magnetic Island in Queensland
who it took about thirteen years to move.
I think it's one of those things where they bank the anti laws and regulations
in case they need them to use against the really egregious cases but tend to leave the rest of us alone whilst ever we behave.
The only place I have ever had a problem, between Busselton on the west coast
over the north to Sydney
on the east, was at Port Macquarie in NSW in 2004 just after they had had an oyster
poisoning scare. Their uniform-in-a-tinny lectured me severely about it being a strict no discharge port and when I informed him that I was having pizza from their pizza shop for dinner and was very regular and would use the toilet in the park ashore on the way back from the pizza shop he welcomed me and allowed me to anchor
in the turning basin for the night.
Both NSW and Qld, south of the Whitsundays have move-on laws but I have never heard of them being applied to anyone except in Maloolaba with it's large population of canal
dwelling, waterside, bunyip aristocrats.