I don't know why you singled out the MacBook charger.
The relevant Australian Standard (AS/NZ 3820, I think?) tells you an electrical appliance doesn't need to have an earth pin if it's double insulated, which the MacBook charger, and the stick blender in my kitchen, amongst others, are.
Source: I'm certified for Electrical Test & Tag in Australia.
The relevant Australian Standard (AS/NZ 3820, I think?) tells you an electrical appliance doesn't need to have an earth pin if it's double insulated, which the MacBook charger, and the stick blender in my kitchen, amongst others, are.
Source: I'm certified for Electrical Test & Tag in Australia.