Independence, while not a fringe issue, is about as politically unpopular there as ICE is here, for different reasons. use whatever polls you want, or read their own stuff:
https://www.taiwannews.com.tw/news/6395438
I think, like most global things Americans are passionate about, Taiwan doesn't want the freedom we want for them. The average resident just want tomorrow's experience to resemble today's, everyone should leave them alone.