I’d agree with the other user. SteamOS is great, but it’s very much focused on a console-like experience.

Even in desktop mode, the Plasma desktop is pretty outdated, and software you install will be wiped between updates if it’s not a Flatpak (although tbf, Flathub has almost everything these days). I also believe the kernel on SteamOS has some alterations that are great for the deck, but means a bit less hardware compatibility for a general-purpose PC.