This has been going on since the release of MW2019. I myself was banned after trying to launch and play the single player campaign on Linux through Wine/Proton. I was unable to even launch the game to play the campaign again on Windows after that, and I no longer use Windows at all.
I emailed Activision support back and forth more than a dozen times explaining the issue, finally resulting in them saying they were escalating to another team. I sent them another four emails over three months, asking if there was any update, before asking if there was even anybody left alive at the company that my emails were reaching, with no response.
I really enjoyed the MW2019 campaign, but I won't be buying another game from Activision.
Unfortunately, this ban happened close to a year after the original purchase, and my intent and goal was to play the single player campaign of the game I purchased, not get my money back.
Good timing, I was just today considering playing Diablo III on my Steam Deck (or trying to)... based on your experience, I guess that might be a bad idea to even try.
I know Activision now owns Blizzard, but I don't know the extent to which these policies apply across other games. I know World of Warcraft has an active and thriving Linux user base still. I recommend checking https://appdb.winehq.org and https://protondb.org for reports on game compatibility.
I think the gameplay and architecture of WoW means there isn't a huge market for "competitive advantage" cheats. Macros let you do most of that stuff yourself, and something that would auto-interrupt a particular spell is probably detrimental at high levels of play.
The only "cheats" I ever really saw WoW care about was botting, and that's probably easier to catch server-side than client-side anyways. Why monitor inputs when you can just see who's been fishing for the past 24 hours in a row?
https://www.reddit.com/r/linux_gaming/comments/nfeupc/modern...
I emailed Activision support back and forth more than a dozen times explaining the issue, finally resulting in them saying they were escalating to another team. I sent them another four emails over three months, asking if there was any update, before asking if there was even anybody left alive at the company that my emails were reaching, with no response.
I really enjoyed the MW2019 campaign, but I won't be buying another game from Activision.