Supporting Linux / Proton and the Steam Deck with BattlEye is just an email away
Recently we had announcements from both Easy Anti-Cheat and BattlEye in regards to Linux, specifically for the Steam Play Proton compatibility layer and the Steam Deck and now BattlEye are making it easier.
How to setup OpenMW for modern Morrowind on Linux / SteamOS and Steam Deck
How to install Hollow Knight: Silksong mods on Linux, SteamOS and Steam Deck