Part of the reason a Chinese invasion of Taiwan seems more realistic is Trump being a sycophant towards any dictator who will give him the time of day, including Xi Jinping.

It's not impossible, but I feel as though if Trump decides that China is friends and Taiwan is enemies (as he seems to have done with North/South Korea lately) then Taiwanese refugees might not be as eager to move to the US as, say, Canada, Australia, or Europe.