nutwood, first up, I should apologize for the "people like you" comment. I should expand a bit so it makes more sense...
I agree with so much of your post - especially in regard to why "on the spot" fines are used, and that many of the fines for social-distancing contraventions would be thrown out in court.
I think I am just defensive of the police position because I have been there - trying to enforce "whatever" the authorities want to at any given point in time - this is an old issue.
But perhaps you could "meet me in the middle". In stead of suggesting that police are abusing their powers, why not attack the government itself for not making rules that are crystal clear? The "police" are not trying to "pervert the legal system"! They are just trying to do what is ordered of them, between the never ending other daily jobs of domestic violence and ... etc etc. Police are not a separate section of humanity - they are individual people with a difficult job that just try to do their best, even when that "best" is unclear.
Yesterday I attempted to research online what the current "rules" are in relation to the whole virus thing. There are, if you search hard, some aspects published by the federal government. There are also some things published within here in Qld for this state specifically. But there is no easily-found set of rules for the average person. Due to this I completely agree that most on-the-spot fines would fail if tested in court.
But again, I say that this is not the moment to find problems - the government is just trying to achieve results in a new war that has no precedent. The threat of fines is something that unfortunately a small percentage of the aussie populace needs to fear - as otherwise they ignore anything that is attempted for the common good.
Again, I refer to the incident where a young person copped a fine for doing learner-driving lessons. Common sense says that such an activity is not an alarming spreading-the-virus activity. But it does clearly fall out of the "allowed" activities, as it is certainly not an "essential" activity given the short federal government directives. So an individual police officer decided to write a ticket - again, completely in accord with the overall guidelines. But then that ticket was reversed (dropped). IMHO a good move. That is a typical case - the officer involved did nothing wrong - they did what they are supposed to do - and then the undesired (by the government) action was removed. This shows that the system is actually working, and that there are checks and balances.
The media will make mountains out of the molehills here in their ever desired need to make money out of news. Like you, I have no doubt that if the person with the ticket went to court, as anyone with a ticket can, that it would have been thrown out due to the simple fact that there is so much that is unclear out there.
But please, the police are doing it hard enough already - have a little faith in them too
️
🗺
️🏛
🛏
but aren’t most of those people all separated from each other, I can’t tell about the person on the mobility scooter in the back. (There’s at least 4 dogs there). So, as far as sitting down they are apart, but are they allowed to be sitting down at all? We are not allowed to sit down. That’s not fair Miss. 
