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.
I don’t know what they check but my Bazzite desktop is often detected as a Steam Deck, which is infuriating because they apply all the wrong settings, and will even remove others until you reboot the game with ‘steamdeck=0’ and it doesn’t even give you any indication that it’s happening.