In my experiences talking with most non-right wing Taiwanese people is simply that they want peace and to not be used as a geopolitical pawn for imperialist motives. I think this is a fairly reasonable position and would hope for at least some form of peaceful rapprochement where some amount of autonomy can be established like in the other autonomous regions in China.

The issue is that the current western hegemonic world order helmed by the US is seeking a point of conflict with China to prevent them from effectively disrupting the current status quo which you are probably aware of: imperialism, neocolonialism and unequal exchange. With capitalisms need to continually expand we see again it's need for war in order to establish new markets. Its probably humanity's number one priority to prevent the upcoming world crisis and as many emerging wars as possible (especially considering what that would do to climate change). Combatting the propaganda designed to manufacture consent for an upcoming war with China is the most important thing that a leftist can be doing in regards to geopolitics.