It’s a cycle. There is more cheater than players on Linux because there is no reason for actual players to use Linux because the games don’t support it…

Valve is trying to change that by allowing a lot of players to use Linux, so there will be more legitimates players than cheaters the next time the games developers will try to support it. I hope that a lot of people will buy SteamOS-running machines thinking "oh, well, I don’t want / need to play with theses games on it anyway", and then later, a new game with anti-cheat will appear and the players that already use SteamOS / Linux + Steam will ask for it.

Or, and I think it will be the majority, some people will use the Steam Deck and Steam Machine while still having a Windows PC for some games. But with times, they’ll start to think "it would be great if I could play this game on my couch / while travelling", and then asking for these games to support Linux. And installing Windows on an handheld or the Steam Machine is not interesting, because buying and installing Windows, for it to be slower, isn’t worth it (pre-installed Windows fix the first part, but it’s still slower…).

Let’s hope for the best.

PS: can we use Steam Link to stream a anti-cheat enabled game from a Windows computer to a Linux one running Steam?