I fly with cadets in the RHS of Airbus with a few hundred hours. An unnecessary risk in my opinion. One day they may be up to the task. But for a considerable period of time they are carried.
When I worked in Australia I never heard of a Captain taking over from an FO. With cadets its commonplace. Low level GA's, hard landings. And when things out of the ordinary, the multi-crew concept is a fallacy. You have a lonely, on your own feeling.
There is no reason this should be done in Australia.
We will see the minimum wage airline pilot in our generation. Who would have thought?