That’s a fascinating question and one I’ve wondered about in regard to certain other Asian cultures, especially where Christianity is not now actively suppressed.
I once spoke about this to a Japanese woman who was in the process at our parish of becoming a Catholic. She was of the understanding that (in Japan, at least), it does not occur to most people to even think about converting to another religion other than what they were born into (in her case, Shintoism). Even if one is not devoutly following the religion of their birth, it is tied so much into both your larger culture and family tradition that it is literally a part of you. You may as well think about changing your race and your sex (even though modern Western culture and those influenced by it are crazy enough to think those things).
Interesting comments. My conversations with Japanese folk I’ve found that their true religion is Japanese nationalism. Deep down most Japanese believe themselves to be the true Chosen People of the world.
I wouldn’t think this would apply to Taiwan which has a conflicted mix of Taiwanese pride but also Chinese culture.