I seriously doubt chips is the most important thing. Its more about Taiwan's geographic location, being a part of the first island chain / line of defense. And just the fact that CCP has been claiming it for a while and don't want to lose face (internally) by giving it up.
Also as a Taiwanese, fuck the scorched earth strategy. I rather the island be preserved for generations to come. The longest Chinese dynasty was Zhou Dynasty for ~800 years, but that was 1046 to 256 B.C.E., then Han Dynasty for ~400 years. It would totally suck ass and I rather not have that happen. But I believe the CCP will eventually come to pass anyway. None of us will be here if it was for 400 years, but I would hope Taiwan will still be around and just as beautiful and great in the far future. I'm hoping the CCP will disband yesterday.