Taiwan, as exotic a place as you can imagine, must be full of specific cultural behaviors. As ever, easy to criticize, difficult to lead.
Oh, and the generlisation was not that unprofessional. I am English, to me that made me chuckle. But the book is written by people who have lived in Taipei for many years, and they paint a picture of Taiwan people as somewhat selfish, rude to foreigners, and not very hospitable. So I will end by saying, next time you speak or write about other cultures or cross culture issues, Think very carefully about what your want to say. He always paid on dates, but when he had the opportunity to get his research published in some professional journals and couldn't afford the fee, he was very hesitant to accept the money from me. Trust me, I know.