Notice how you didn’t even consider the possiblity of just china and Taiwan being separate countries. Which is how many civil wars end (the US civil war is not the only civil war). It is also the ending that causes less harm overall. The taiwanese don’t die, and the Chinese don’t “give in to separatists”, because they are not separatists. You can’t separate from a state you never belonged to. The taiwanese were never part of communist china.

What the taiwanese want is sovereignty.

The threat of blowing up TSMC if invaded helps with their sovereignty because it both avoids the Chinese attacking them and helps the Americans defend them.

I’d bet if you were a lego fan you’d say the same about legos.

Housing and concerts are orders of magnitude apart in “importantness”. All of the items above are not needed to live. A home is needed.