Apex Legends is an interesting case because EA/Respawn initially shipped with first-class support for the Steam Deck (going as far as to make changes to the game client so it would get a "Verified" badge from Valve) -- including "check[ing] the box that allows it to work". However, the observation was that the anti-cheat code on Linux wasn't as effective, so they eventually dropped support for it.

https://forums.ea.com/blog/apex-legends-game-info-hub-en/dev...