Yeah i can concur with that.
My family and extended family go back to Greece all the time.
I don't know too many people who moved back after living in Australia though, probably 2 or 3 families. So it's not common.
Maybe cause USA is closer to Greece? Australia is literally the other side of the globe
I met a man in Aegina who was running a corner store and when he asked me where i was from, i told him Australia, and he was shocked! Like he'd never seen a Greek Australian before. LOL