It’s not an ignorant question (I actually don’t think there are any ‘ignorant questions’)…it’s a debate itself and you’ll see various arguments on both sides that are valid. Myself, FWIW, I’d say it’s not overwhelmingly likely that Taiwan would fall to an invasion, but it is probable that they would. I wouldn’t being to give odds, but I’d say better than 50/50…with caveats.
First caveat…would the Taiwanese fight all the way, go all in? If so, then it makes a successful Chinese invasion less likely. Second caveat…how badly does the CCP want it? If they are also all in, win at any cost, that makes it nearly inevitable they will win…eventually. It’s a near certainty in this case in fact. Simply, China has an overwhelming numerical advantage in all categories. They have more ships, more planes, more missiles, and more warm bodies to throw at Taiwan, and if they were willing to pay any price they would do it.
But…I doubt the CCP IS willing to pay those sorts of costs, and I really doubt the Chinese people would be. The main issue I see is, China and the PLA don’t have a very deep bench so to speak. The number of highly trained and highly motivated troops in the more technical MOS categories (pilots, Naval officers, etc) are fairly thin…and a lot of folks in these classes come from the Chinese elites.
It would be a nasty fight, with China hammering Taiwan in the early phases with missile strikes from air to ground and short and medium-range ICBMs and other ground-based attacks. But when it moves into the actual invasion, the casualties on the PLA(whatever) side would be brutal, especially the actual landings, and especially since while the PLA does some actual military training, they actually have very little experience with real fighting at any level. So IF Taiwan is actually willing to fight as a nation, if the people are behind the government and will fight to the death, I think that the mainland Chinese casualties would be tremendous.
Hopefully, we will never find out either how Taiwan would fare alone or what the result of any war will be. I think to ensure that, all that needs to happen is the US just comes off the fence and states clearly what our intentions are. Japan doing so would just add icing to the cake.