Speaking as a simple unlawyered Bush lawyer, I don't think Victoria has any power over aviation activities whatsoever since it ceded those powers to the Commonwealth in about 1921.
In other words, it can pass all the bloody acts it wants to, but I don't believe the courts can enforce them.
I'm still scratching my head over Rocket Rob and his seaplane, the water police tried to tell him the Cessna was a boat and required marine registration as a commercial vessel and certain kit as a result. Last I heard, the result was a draw.