One big issue with Linux / SteamOS gaming is a lack of anti-cheat support, and it seems Electronic Arts (EA) have future plans for supporting the platform.
Currently, EA’s own Javelin Anticheat does not support Linux platforms at all. As a result games like Battlefield, EA SPORTS FC and various others simply don’t work. That may change in future though, especially with the rise of SteamOS / Steam Deck and the future Steam Machine.
Worst case scenario: they develop the Javelin anti-cheat as a DKMS module which has to be loaded on boot, kinda like Riot Games’ Vanguard works