You're running Linux? Oh fine... on which hard- and firmware? Intel? AMD? Apple Silicon? Qualcomm? All US.
You're using the Internet? Via Cisco routers?
Europe and other regions would have to put in huge efforts to really gain independence.
It will take time to untangle the mutual dependencies and become more independent. That said, ARM also designs full ARM64 cores (until recently Qualcomm cores were based on ARM cores, until the new cores based on the NUVIA acquisition) and they can be fabbed in Taiwan (TSMC) and South Korea (Samsung), and hopefully Europe in some years.
Besides that, it's true that if you are running Linux, you rely on US firmware and Intel/AMD chips, but assuming that Intel ME doesn't have a bad remote kill switch, you can continue to run on existing hardware.