I tend to use operating system in the CPE literal definition === kernel. I hate throwing around with work OS just because we have thrown together some applications on like Debian or something which is like what 90% of people do. If you aren't at least stuffing things into the device tree or adding system calls at build time, you're not modifying the OS and therefor its just another distro imo. Modules don't count :)

But I suppose this means low level protocols, however nostr isnt taking over any byte-level protocols yet and likely won't unless we start to freak out over it. We can have secp256k everywhere, but Linux already has so many decentralized protocols and already has them working well. The issues they are trying to solve are insanely complex which is why it's not mainstream yet.

GNU has made some serious progress in this space.