From the article:

> The U.S. accounts for 60% of TSMC's sales, but the company operates only its subsidiary WaferTech there, producing chips for mature technologies.

In this case[1], "mature technologies" appears to mean downto 160nm tech node...essentially irrelevant with respect to FPGAs.

[1] https://www.wafertech.com/en/foundry/technology.html