If anything is an abnormal Taiwanese trait, it must be to begin a conversation with a strange foreigner in order to have sex. If you accept that this is a culture where talking to strangers is often a stressful event, you are either describing a very unusual Taiwanese person, or you have been brainwashed by the myth. I know many single male Westerners here, and it’s clear that they aren’t being hunted down – they ponder the strangeness of this to me (“Maybe if I were taller…”).