It is incorrect that Judith Anderson is the first Australian "Dame of the British Empire." Forty-two years earlier, Dame Nellie Melba (an Australian), the world's acknowledged (then) greatest soprano, was created a Dame in 1918, and there have been a great many since, many of whom are far better known than Dame Judith.
Australians get so tired of Americans who get practically everything about them incorrect. In this, they are usually joined by most of the races in the world. Americans then wonder why other peoples are exasperated with them!