is there a rhetoric that players 'have' to play in Australia; it's only if they want to be eligible for the Wallabies, then they do. Making it a racial issue is disingenuous. I'd say a player's heritage plays a role in deciding whether to go overseas because some may still be eligible to play test rugby and experience events like the RWC through their parents/grandparents. Certainly, this applies to the Polynesian rugby community in Australia, but it also extends to the likes of Hansen and Dempsey when deciding on the merits of heading overseas.
I get what you're saying about celebrating the players going there, but the reality is the Top14 isn't comparable to NBA or Premier League though, even if you remove all the arguments about the gap in quality and level of competition one of the biggest factors the Top 14 it lacks the global appeal and reach that the NBA and Premier League do. Both NBA/Premier League invest heavily in marketing to generate a global presence, to the point they're cultural icons in their own right. For this reason, it's difficult to celebrate a player leaving as it means they have disappeared from exposure in Australia. In contrast, the NBA and Premier League celebrate and capitalise on this.
From an individual perspective, yeah absolutely going to France to play rugby is a great option for a whole variety of reasons.. I guess it depends on what individual priorities are though, which as fans is the hard thing to guage.