Camping is about getting out into the wild, or at least it should be, camping should set you free but you may want some comfort while you are at it.
This is a huge country and to get to many parts you do need to go off-road or at least away from streets that are paved. You could trek but then if you want to camp you have to carry a lot if you would like to camp on how you can get and you're still limited.
Having an off-road camper trailer and a road vehicle though you may head out to anywhere you have a home when you arrive and like. When you have children with you who enjoy some relaxation this is a practical alternative or it's a compromise with your spouse. In any event, you have the glory of being out in the beautiful hinterland of Australia while your family can enjoy comfort.
Off-road trailers are designed to be light and small weight. They fold down to a size that you wouldn't imagine into but when you arrive and unfold your tent you'll be surprised at how much space you get much would fit. What you get are a base and sink and a stove.
With the six of those tents, they're best for families for friends or with a couple kids. A trailer gives you a tent with three good sized space and is excellent for three or two couples enjoying a holiday.
Off-road tires and an off-street hitch lock are important features for an off-road trailer. Coupling and A tow ball would detach on roads but are designs.