Steam already runs fine on Linux, you don’t need SteamOS to us the compatibility functionality, meaning anything you can play on the steamdeck already works on a Linux pc.
Playing modern Windows games on Linux and SteamOS is done using Wine and Proton. Wine is available on almost every Linux distro and Proton comes* with Steam.
*You can use Proton outside of Steam but it’s quite hacky and not really needed.
Steam already runs fine on Linux, you don’t need SteamOS to us the compatibility functionality, meaning anything you can play on the steamdeck already works on a Linux pc.
To add to this;
Playing modern Windows games on Linux and SteamOS is done using Wine and Proton. Wine is available on almost every Linux distro and Proton comes* with Steam.
*You can use Proton outside of Steam but it’s quite hacky and not really needed.