The unusual
IMHO young people are very adept at learning something complex, yet repetitious (such as operating a modern jet). But the experience part enables you to better handle the unusual (maybe because you once flew a twin with an engine out/hydraulic failure etc etc.). SOPs are written to try and cover every situation, but there will always be the 'next thing' that no-one has seen before (half the roof comes off/hijackers prising the door open/computer has a bug etc etc).
Even the ability to be cool under pressure. Experience helps.
Maybe oz is benign enough to allow low experience operators to get away with it. But that's what you are doing- 'getting away with it'.