Streetview is from 2008 as mentioned in the footer of that image.
Gates were 2009:
From Stapylton Campground drive west along Olive Plantation Road towards 'Grampians' Road. Park at the first left turn after about a kilometre at a sandy hump with a gate. These locked gates were recently installed at either end of the sandy access track (February 2009)
So to clarify the access instructions on thecrag, what need to change?
From Stapylton Campground drive west along Olive Plantation Road towards 'Grampians' Road. After about a kilometre, park at the first left turn at a sandy hump with a gate.
?
I used to just leave the car at Stapylton Campground and walk along the powerline cutting to the sandy road.