Whether or not he'd be a Wallaby I think he does demonstrate what consistent gametime can do. In the 18 months (give or take) since joining Glasgow in mid '21 he's played 42 professional games (30 Glasgow, 11 Scotland, 1 Scotland A).
As compared to the 6, 6.5 seasons of rugby before I would wager he would have played less than 60 "pro" games total, and a huge chunk of those would have been made Junior World Cup & NRC appearances.
He very pleasantly continues to surprise (somewhat expected him to be handy for Glasgow and get 3-6 Scottish Caps total) and seems to be adding a lot more strings to his bow as time goes on and he gets more time and confidence. Hope he can convince Mosese to embrace the correct shade of blue soon enough.