As someone else mentioned, that one was based on a different distribution of Linux, and had a lot of differences in function/setup to the current version of SteamOS on the steam deck. The steam deck’s version is steam deck exclusive right now, and people have to use other options like Bazzite and HoloOS if they want a Steam Deck-like experience on another device.

This implies that Valve is finally ready to let other vendors use SteamOS, which is great news.