The way that rule is written, the way the regulator will prosecute it, and the way the court will enforce it, is - if you did [the thing] then you are guilty, unless you can prove you did [the relevant defence]
Sadly, that's the real world.
Bankstown Boy,
I believe you are getting a few things confused. If CASA are dragging you to court, then they will *already* have the proof and therefore, a high confidence the conviction will succeed.
There is no way they would take you to court with less. You seem to be saying they would take you to court with just an allegation.
Once in court, you can defend yourself. Is it this stage where you believe you are under the assumption that you are "guilty until proven innocent", and thus have to now prove you are innocent?