True but they are a commercial operation - entertainment being one arm. No individual and especially no solo outfit would attempt those old washed out bulldozer grade mining tracks.
Easier to walk to some of the viewpoints than burn $ slowly crawling along in a car.
The west coast is still the wild west and locals have been driving like the 24/7 crew well before those guys were in nappies.
Not that that ever justifies trashing public tracks.