The meat of the story was the students who came to Australia had been fed a steady diet of propaganda, just like you, but after having been in Australia for a few years with no limitations on what they could read or see, they still thought (or at least said they thought on TV) the propaganda they were fed better reflected reality than the "fake news" they saw in Australia.
They can't all be that dumb, surely?
I'm guessing the real reason is they expect to go back to China one day and are over here to further their careers in China. One of the reasons for this belief is when a Chinese minority stage a protest in the capital outside of an embassy, these overseas students turn up like clockwork and stage an anti-protest.
This organised paid-for like protest is fairly rare in Australia, so it's caught a lot critical attention. The only time I recall it happening is Labour Union protests stages by workers for the Union itself, however even in that case the people doing the protesting were true Union believers.