You have an island governed by a democratically elected government, with a population that from what I remember mostly doesn't want to be assimilated into the PRC. The PRC taking it by force would, in my eyes, be rather imperialistic.
democratically elected? arguable and only for the last few decades at that. it was run as a brutal single party dictatorship backed by amerikkka until fairly recently. And last time i checked the vast majority of people in Taiwan want to maintain the status quo which is that Taiwan is part of China.