I am not sure that American public can sustain such calamity . The threshold of pain is very low in CONUS. They fight on other people land but not on their own. But next war might not be so lucky. 9/11 is nothing compare to lost of 6000 seamen in sea.
I don't believe American want to die for Taiwan democracy or not
For whatever reason, this scenario is rarely mentioned. It's not even in the public's mind, so I agree it would be a massive shock. For whatever reason, most mainstream analysis seems to assume that it's going to be some Battle of Midway movie where the airplanes are flying all around and the newly minted Republic of Taiwan forces are bravely holding the island against the PLA.
The loss of such as asset could be something that galvanizes the country, and brings everyone together to defeat the enemy. This is what some of those hawks are counting on (IMO). It is not about threshold of pain or other's land, they were in Afghanistan for 20 years. The problem is that when you look at something like Pearl Harbour, or 9/11, these were attacks on American soil. The problem for the Taiwan scenario is that 2 things are usually ignored.
1. Change in the status quo precipitated by Taiwan politicians. Why die for their choices? (though I don't imagine that any Taiwan president would do so without go ahead from USA, case in point CSB and what happened to him when he wanted to launch a referendum)
2. If defense already has collapsed or basically was non-existent. Basically sending people in to die for a lost cause.
Wishful thinking posited by pseudo experts and failed military strategists in the west a.k.a. U.S..
Frankly speaking, the U.S. has never entered a war post WWII where it didn't enjoy preponderance level of military tech and power over it's adversaries. From Korea, Vietnam all the way to it's recent defeat in Afghanistan the U.S. has had the privileged of being the unquestioned superior power.
The U.S. has become so arrogant and assumes that their days in the spotlight especially in warfare will never recede, what a contemptible arrogant country.
Whether it's wishful thinking or not, that is the strategy. It might not be the most well thought out strategy, but the US also told everyone they would be welcomed into Afghanistan, they would be welcomed into Iraq, the Libyans will be happy to see Gadhafi go, etc. etc.
Going back to the OP, what constitutes "a handful"? You'd really have to talk about a few ten-thousands to be actually considered real opposition. Otherwise it is just Bay of Pigs or Tibet uprising all over again. If it is a few dozen scattered around, it would be more likely they would get ratted out if (or when) they cause any problems for "regular" people. Bay of Pigs is a perfect example actually, once Americans realized there would be no popular uprising, all their promised support evaporated like a shallow dish of water outside in the hot sun.
Do you really think it is about semiconductors? Intel has all their fabs in America, TSMC might have fractionally better technology than Intel, but it's not light years. Taiwan is all about containing China and surrounding them with Maritime enemies (Japan) or at least non-friendlies (ROK, Philippines)War is about politics. Just remove the will of the US to fight and we can capture Taiwan easily.
This may be controversial but my suggestion is to just bomb TSMC. Without it, the US has no reason to fight. The strategic calculus doesn't change whether China has Taiwan or not.
For Taiwan, without TSMC they are basically broke. Destroy it then sanction the shit out of them until submission. It's a tropical island with water insecurity. They will break.
It doesn't need to be a strike. Can be an "unfortunate industrial accident."