Yossarian
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There's a difference between encountering things which you find difficult and strange, and writing a blog which drips with contempt. Lots of expats do talk like that, you're right. A lot of expats on the mainland like to repeat the refrain 'Only in China!'. I avoid them.
It just sounds like 'It's not fair! I don't like it! They're doing it wrong!'.
Hong Kong seems especially bad for it IME, probably because of its past as a British colony - you meet plenty of the kind of people who have been here for 25 years or more and seem quite proud of the fact that they haven't learned a word of Cantonese in that time.