According to proton db someone got it working on deck 3 days ago https://www.protondb.com/app/1008080?device=any
I know, and I call it bullshit. There's no way I could't get it working if I could, considering that it can't run yet. It can't because of the launcher or the anti-cheat (more probable) and proton is proton, there's no difference for the steam deck, apart from gamescope and integrated steam.
