It's overselling it, but the move towards digital sovereignty isn't a passing fad.
The various revelations over the years about the US spying on allies and Microsoft famously telling the EU(?) that they could not guarantee that their data would not be turned over to the US government has all but ensured that this is going to happen as a matter of national security.
They can't have their government dependent on systems that could be disabled at any time for political reasons, like the sanctions applied to the ICC judge on the genocide case against Israel.
It was one thing when the US was an ally, but now we are not a dependable ally and these countries are reorganizing their security posture in recognition of that fact.
Linux is the only viable operating system that is not vulnerable to US government sponsored supply chain attacks. While it may not be deployed everywhere immediately, the directive to agencies to start planning for the transition is the first step in the process and critical services will transition much sooner.
This will happen regardless of what happens in the election, Trump has exposed the weaknesses in our system of government and the attitude of US elites towards other countries. No sane country would trust US tech given the direction of things.