Language is something you can teach, but it isn’t really something that’s easily controlled. The term “OS” already means something like ‘a space that lets you interact with and manage apps and services on a personal computing device’ for most people. This is the case because of how its used with Apple, Google, Windows, Steam, Meta, etc…

So the literal operating systems of other kinds of equipment, such as a vending machine, might eventually end up with its own moniker if the distinction becomes important enough to matter.

Casual Deck owner here. Arch Linux is my answer.