SirIglooi@sh.itjust.worksto
Steam Hardware@sopuli.xyz•Valve Gives The Green Light to Install SteamOS On Desktops To Create Our Own Steam Machines

7 days
I dont think thats really an issue and more so a design choice to keep steam os immutable. I doubt that’ll change since it does make it much harder to break the system.

You can layer packages with rpm-ostree on bazzite tho, which do persist through updates. As far as I know, steam os has no such thing.