Just like "controlled airspace", ask a PPL anywhere else about the seriously big deal we make of it in OZ, all you would get is a "WTF, it's just airspace" look.
I would think that's because in those other places, they train in and around and are familiar with operating in CTA / CTR - unlike many of our Aussie PPLs from the bush who panic at the idea of going near controlled airspace. Not their fault, just unfamiliarity, and it needs to be trained for. I certainly don't get 'WTF, it's just airspace' on the first couple of trips in, it's more like 'WTF did they just say and WTF am I supposed to do or say now?!', accompanied by a look of startled fear.