Amy Johnson managed to come from UK with just a School Atlas and a compass. So why did they ever bother to invent GPS? Chuck all of your expensive ASA charts away and get a good Atlas. Gregory's is fine for flying around Sydney.
Seriously though - some need to come into the 21st Century. The challenge is teaching PROPER use of GPS and in particular, understanding its limitations. Any student who is using it as sole means on a Nav test is not likely to get very far - because the GPS will definitely fail! It is also true that a few aerodromes have already switched off their NDB's relying on GPS NPA instead. That is the way of the future - especially when WAAS gets going.
The danger is the nice new licence that gets a flash hand held, battery powered, sticker ariel Garmin for Christmas - and then ventures off into the outback without so much as a briefing on its power, traps and limitations.