Although Destiny 2 landed on Steam, players need to note that developer "Stick Chicken" Bungie has officially announced that Destiny 2 does not support handheld Steam Deck play, and if players try to run Destiny 2 on it, they will be banned from account.
In Bungie's game support interface update, the official said that unless Steam Deck is running the Windows operating system, Destiny 2 will not support systems running Steam Play Proton on Steam OS hardware devices. If a player tries to run Destiny 2 on Steam Deck, the player will not be able to run the game and will return directly to the game library. Any Destiny 2 player who tries to bypass the compatibility issue will be banned.
Although players may think that it is due to the third-party anti-cheat software used by Destiny 2 as a multiplayer game, it is causing compatibility issues. However, as the most common multiplayer game at present, but also the anti-cheat software used by Destiny 2 BettlEye official said that bettlEye has been deeply integrated with Steam Play Proton, developers only need to contact them, an email can be launched on Steam Deck. Both ARK: Survival Evolved and Horseback & Slash 2: Overlord have both launched BettlEye. So most likely for other reasons, the Steam version of Destiny 2 won't work on Steam Deck, and in any case, for the good of your account, don't try to play Destiny 2 on Steam Deck.