Just got my 512 GB Machine today. Its hostname is steamdeck and the default Linux user is deck. I would have expected them to at least change the hostname in SteamOS. No wonder all the Deck ready games use a Steam Deck profile if not even Valve bothered to rename the thing.
Wonder if it also sets the steamdeck environment variable.
SteamOS in seems to have references to the deck all over the place, if I recall correctly from the GN video I watched. It was one of their criticisms. Overall I’m not sure it was really fully baked before shipping.