So, apparently the author of this article works for the Pentagon, and was attempting to blow the whistle on US efforts to push towards a war with China. There's a recent Washington Post article about it here.
He also wrote this article shortly before, which is worth a read.
The US doesn't care too much about taiwan, definitely not worth going to war with china over it. Losing tsmc would be a pretty big deal though.
The US does care about losing their global empire, though. A conflict over Taiwan would just be the excuse they need to go to war with China in order to stop them from becoming the new global superpower.