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One thing we all agree with PirateSoftware about were his statements on this.
It isn't necessary, it limits the games playerbase, and it doesn't even prevent cheating very well. There are no case studies where kernal level anticheat prevented hackers and cheaters over other methods.
The Riot tech blogs had some pretty graphs on this. Though they recently said that Windows security features have gotten good enough that their anti-cheat won't need to run on boot anymore.
It'd be nice if it would run on Linux though.
TBF, several of these are not kernel-level, like EAC, BattlEye, and Denuvo AC. They still suck and are security issues.