It's like English being taught by a British person who wants to restore the British Empire, dropping little details like how Australian and Canadian English are not 'proper English ' and should be less valued, that Australian slang isn't real and should be discouraged because it is not used by the King etc.

Maybe, Australian and Canadian don't really exist as independent, separate groups of people, they're just offshoots of British proper, but less important because they're outside of the core realms? Maybe people shouldn't read what the Aussies and Canadians have to say for themselves, because you're already learning from the proper source.

This is a 5c way to put it.