To be honest, a lot of tourists don't realise how big Australia is. A lot of cattle stations are larger then entire European countries. One wrong left or right turn because the sat nav tells you that is the direction of the next fuel stop and over nighter you will easily end up out of fuel and supplies. Most refueling stations are around 600km's apart. And a lot of sections you need to bring extra fuel to make the trip if you don't stick to the main road.
I do get that, maybe I don't fully appreciate the scale, but I understand the sentiment. But if I'm somewhere I don't know - I check things before rather than just setting off and trusting a sat-nav.
You will be surprised how many people would trust Apple with their lives.
I'm not sure this is actually about Apple per-se, I would suggest any cheap consumer sat-nav system (including smartphones) are culprit here.
Map reading is so easy with a little practice and common sense.
See, before sat-nav, I used to read maps before heading out, jot a post-it of junctions and so on, and generally have an idea of my route. I used to adore orienteering when I was a cadet, and have an intensely strong sense of direction (with one blindingly annoying caveat).