The statistics also indicate that players can improve over a number of years, regardless of where they're playing. A case in point is Tom Robertson, who's had a pretty good year, despite a pretty ordinary 2017. If he'd gone to NZ after 2017, then shown the form he has this year, the response would be 'look how the New Zealanders turned Robertson around after failing at the Tahs'.
I have been around rugby in various forms since the 1960's, and am well aware of Aus Rugby's many flaws (including the current administration), but do get a bit weary of so-called supporters of the game who can only ever post about all the perceived ills of the game here, and how Aus rugby is rapidly going to hell in a hand-basket.