It's really important to make sure it keeps running though. Without them having a proper QA pipelime for Proton the game might just stop working at any time after the tibiest update. Or even worse, EAC perma-bans you from a game you paid for. And them not dealing with Linux or Proton, having no clue how to differentiate between translation layer and malicious interception, refusing to unban. Wouldn't be the first time this happened, so official support for competitive games is pretty much mandatory.