Actually, you could argue that what Oprah is doing is patronizing to Americans (U.S. citizens).
She is essentially doing for Australia what she does for books--"ooh, look, I like to read, so should you! Here is a cool book I like!" and the "great unwashed who haven't picked up a book in their entire adult lives" rush out to the book stores to purchase her latest recommendation. Those of us who already like to read and love books couldn't care less what book Oprah recommends because we already have a huge backlog of books that "someday" we plan on getting around to reading them.
Those of us who like to travel, are interested in other cultures and people and who are aware of the world, already know a lot about Australia and, some of us (me), would love to go there someday. I don't need Oprah championing Australia to me.
Good on her for promoting books and travel but I personally don't need those things to be promoted to me.