I’ve looked around a little, and found some mentions of using Lutris, or running it through Steam (tbh I don’t know how that would work), but I’m not really able to find any guide that explains the process well enough. I’m so used to the game being handled by Blizzard’s Battle.net launcher, so I can’t really wrap my head around how that would work.
They’re probably talking about launching said launcher from Lutris or Steam.
kagis
https://www.gamingonlinux.com/guides/view/how-to-install-battle-net-on-linux-steamos-and-steam-deck-for-world-of-warcraft-and-starcraft/