Misconceptions of Australian culture are rather widespread in the US. Some Americans seem to think films like Crocodile Dundee are representative of mainstream Australian culture, when they aren’t. Films like that are taking stereotypes about the small minority of Australians who live in remote rural areas, and then exaggerating them for comic effect. The vast majority of Australians live in big metro areas, and have a rather different culture. It would be a bit like if someone saw a film about rednecks in the Ozarks and thought it was representative of the average denizen of New York or San Francisco.

Of course, in part it is just as much Australians’ fault for selling that kind of cringey stuff to Americans as it is Americans for lapping it up. The late Steve Irwin (of “Crocodile Hunter” fame), was likewise playing up those stereotypes in his on-screen persona. Some more recent cultural exports (for example Bluey) have done much better in this area

And rather obviously Outback Steakhouse is exploiting this ignorance as part of its marketing rather than challenging it