Looking around the world, we have many examples of pairs of nominally independent countries that basically act as a single entity when it comes to foreign policy positions, geopolitics and security issues. They are also so heavily integrated on an economic, linguistic, and cultural level so as to be virtually indistinguishable outside of small nuances. I am referring to the relationship between Belarus and Russia, and between Canada and the US to an extent.
Obviously, in the case of Taiwan, the current domestic political environment basically equates a pro-independence position with an anti-China position. Part of this pattern of preferences is internally consistent, because China is the insurmountable hurdle preventing independence. But for pretty much every pro-independence Taiwanese, there is always this intrinsic disdain for China's political system, and foreigner worship. But this does not have to be the case on a philosophical level - one can plausibly advocate independence but want to maintain a strong bond between the island and the mainland on every level.
One question I have pondered for a long time is this, and it is entirely hypothetical. If the cold logic driving Beijing's need to take Taiwan is one of security and geography, would it be willing to settle for something akin to the relationship between Russia and Belarus? In fact, one can argue from a security perspective that this is preferrable to the current arrangement, because de facto control is surely more advantageous than de facto autonomy. Again, purely hypothetical, but I have never heard any sort of answer or contemplation of that pathway.
Edit: I do NOT support independence, please don't attack