Aah, the rights of the people living in the Republic of China today are what is important you say? Ok, now, lets be clear about this, the Republic of China, according to their own constitution, includes all of the mainland, the capital is Nanjing and the number plates define Taiwan as one province. The constitution also lays claim to the mainland. Taiwan does not even define itself as a separate country to China.
If the Republic of China government, currently located in the temporary capital of Taipei, attempted to change the constitution to formally separate from the rest of China (The People's Republic) then it would very likely lead to the People's Republic invading the Republic. Even the US knows this as they stopped the ruling party in Taiwan from changing the constitution earlier in the 2000s because it would provoke a war.
But let's look at this from a strategic point of view.
Your proposed strategy is to invoke an act of self-determination on the part of the Republic of China, which everyone knows will provoke the People's Republic to invade. On this there is little or no disagreement. In terms of the right to self determination, the Taiwanese know full well that the best course of action is to leave the status quo and avoid war. War has this tendency you seem to miss that it tramples all over self determination. In fact, the current strategy has worked to avoid those living in Taiwan from being invaded, killed and having their cities leveled. It's all well and good to sit comfortably thousands of miles away in Southern Australia and spout platitudes about self-determination, its not you who will be in the firing line. In any case, the Republic of China is going along quite well and I reckon they would really prefer not to have a confrontation with the People's Republic. Yes, they're kicking the can down the road along with everyone else, but it sure beats getting invaded, they retain far more self-determination if they can continue this than if they provoke China.
Not dissimilar to Ukraine really. Your suggested strategy is to use small countries to provoke large nearby military powers, in order to further geopolitical goals, and then wash your hands of the outcomes. Unless your strategy is to provoke the large military power (be it Russia or China) and back it up with serious military intervention which would likely lead to a nuclear confrontation, or at the very least a confrontation between massively armed nuclear powers, then your proposed strategy is a recipe for war and possible nuclear war.
Your high horse is a nice place to be, but you are not thinking through the very likely outcomes of such a strategy.
If you really want to further limit the self determination of those who live in the Republic of China, then provoke the People's Republic.
None of us like this but it is the way the world works at the moment and provoking nasty wars is no solution.
DS