It can be a mutually beneficial arrangement, perhaps letting TSMC US produce some defence-relevant silicon and providing a safe haven and nest-egg for Taiwans elites in case of invasion/unification.
That is not a beneficial arrangement for the Taiwanese population, compared to "if Taiwan fall this capability is lost, defending the island is absolutely necessary".
Who would've thought that high-end chip manufacturing could be a (n enormous) bargaining chip.
Someone who can think long term I guess
The same people behind the Intel ME, AMD PSP, etc, etc.