Champin,
Our 4wd Club has an exemption, chainsaws, as we help NPWS maintain several old huts within National Parks, only when we are attending to this task.
Used for clearing tracks, to gain access to these remote places.
Sometimes after storms, trees can be down across tracks.
I haven't looked into,
If you are carrying a chain saw and you need to travel through a National Park, to gain access to a State Forrest, free camp or private property.
I also don't know how they are going to police it, we've been camped in state forest, and have heard a saw operating across the river in a national park.
So I guess some people either don't know the regs or they are just, oh well if I don't get caught,

You don't use magic to disappear, ya use a 4x4 & Swag.