Are you really sure only westerners are having an awesome time in Taiwan? Have a look at the data for who travels most to Taiwan (and presumably enjoys it):
Simple test, if you go talk to anyone on the street, in English, they will try to answer in bad English(if they can). this is especially true for young/highly educated demography like me because we are educated in western value since very young.
If you came from southeastern, say, Philippines, Thailand, Vietnam. There's very good chance you see people look them in distain. Because those are usually imported labor for manual tasks.
I'd hazard a traveler's experience can highlight a culture's stereotypes more easily than it can the experience of a naturalized member of the community.
I used to love watching Bourdain's travel series for exactly this reason; he seemed to always want to get the deeper context and insight from the people he'd meet and his narration showed a firm understanding of how who he was and where he came from influenced his experience of a place/culture and the conclusions he'd draw (if any).