Two weeks before the Steam Deck officially goes on sale, Epic Games CEO Tim Sweeney has revealed that the company currently has no plans in updating the game to make it compatible with Proton, which allows Windows games to run on Valve's handheld operating system.
In response to a Twitter user, Sweeney said that the main problem lies within Epic's Easy Anti-Cheat system as it is incompatible with Proton. Since Linux is a more open-ended platform compared to Windows, he "[doesn't] have confidence that we’d be able to combat cheating at scale under a wide array of kernel configurations including custom ones."
When another user called him out for not trusting his own product, Sweeney replied, "With regard to anti-cheat on the Linux platform supporting custom kernels and the threat model to a game of Fortnite's size, YES THAT'S EXACTLY RIGHT!"
Regardless, this doesn't mean that it's completely impossible to play Fortnite on the Steam Deck. Players will need to download Windows on the device in order to play it, which isn't that big of a problem.