Earlier quoted context omitted.
>They fixed the worst thing about SteamOS: It's now got an Arch base. I'm a little surprised they didn't go with something like Fedora. The kernel / drivers are kept just as up-to-date as Arch but the rest of the system is a little more stable.
Aren't up-to-date libraries fairly important for steam?
The most important libraries for Steam are things like Mesa, which Fedora updates on a rolling basis along with the kernel.