At least some parts of the french government seem to be moving towards Linux (NixOS): From what I understand they’ll be basing it off GitHub - cloud-gouv/securix: Sécurix is a NixOS-based secure operating system tailored for small to medium-sized teams. It provides a minimal, hardened environment with strong isolation, reproducibility, and policy-driven configurations to ensure operational security and compliance. · GitHub
It’s a fairly widespread Internet meme, I think in order to make fun of France, though I’m not sure exactly where it originated.