what your saying is true, However lets say you are inbound to Broome from south (although no terrain here, this is just an example), there is nothing to fix your position on to recalculate your lowest safe. There is however an NDB which the NVFR pilot is already endorsed on and also a DME which the pilot could use in the situation i proposing if they were adequetly trained.
Just remember, there may be plenty of positions to fix yourself on in city areas, but in most country towns the isn't and the strip is usually located some distance from the town (and may not be located on track) making it nice and dark