People look at me funny when I say I'm interested in learning an Aboriginal language, but I suppose I might do the same to an Aussie who came to the US and wanted to learn a native American language. Perhaps after this stay in Australia, (part of) which is in the midst of a facing up to the history of Aboriginal oppression, I'll respond differently.
It's not as though mainstream Australian culture isn't plenty interesting, of course; witness this billboard for one of the shopping centers in the middle of town! 'Course it might make Leonardo warm to Dan Brown.