> They are never going to nuke their blood kin.

How do you explain the brother against brother kill kill kill nature of the US Civil War then?

Later, in the Atomic Age, the US military had no real issue with fallout drifting across US citizens during above ground weapons testing, they covered up dropping a live, armed nuke on US soil that only barely failed to detonate

https://en.wikipedia.org/wiki/1961_Goldsboro_B-52_crash

(There's robust debate about the safety mechanism that either "worked as intended" or "failed in failing", the wikipedia page might link further)

We have thousands of years of examples of two “blood kin” groups attacking each other. In addition to this is the fact that not all peoples with roots in present day PRC are Chinese. Tibet is a region of PRC that is not Chinese, for example.

That might have been true at one point but younger Taiwanese no longer feel much kinship with mainland China. And kinship didn't prevent the long series of revolutions and civil wars that have dominated Chinese history for millennia. I wouldn't be surprised to see another one when a power vacuum appears following the death of Chairman Xi.

We wouldn’t get involved if tsmc hadn’t taken over the world.

> simply a foil for China

You say that like it's a bad thing...

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EDIT: And while I'm under no illusions about the realpolitik, it's also true that China is a communist dictatorship; Taiwan is not.