Valve seems to be testing ARM64 and Android support on Steam, as per a new SteamDB leak. Popular titles like Left 4 Dead 2 and Garry's Mod are being tested with "proton-arm64" tags, among others. This could hint towards new future Valve hardware running on ARM64 architecture.
The steam deck runs Linux and has to use a modified version of WINE(Wine Is Not an Emulator, that’s the downvotes I assume) but almost all games are made exclusively for windows, the games you can play on the steam deck are all running through a translation layer, now steam handles this well and they make it almost seamless but that doesn’t change the fact that you get some Jank and incompatible games, AntiCheat is the big one that comes to mind but hardly everything, I know it has troubles with Dx9 and earlier Dx, I have trouble with the Arkham Knight games, Gta 5 just borked the update, Vr isn’t playable,
The steam deck runs Linux and has to use a modified version of WINE(Wine Is Not an Emulator, that’s the downvotes I assume) but almost all games are made exclusively for windows, the games you can play on the steam deck are all running through a translation layer, now steam handles this well and they make it almost seamless but that doesn’t change the fact that you get some Jank and incompatible games, AntiCheat is the big one that comes to mind but hardly everything, I know it has troubles with Dx9 and earlier Dx, I have trouble with the Arkham Knight games, Gta 5 just borked the update, Vr isn’t playable,