Comment by mitkebes
Generally yes, although some cheats like aim assistance would work fine on online streamed games, since they can scan your screen and adjust your mouse input to aim.
To be fair kernel anticheat can't block this completely either, it can be run on external hardware that uses a capture card to analyze your video feed and alter your mouse inputs to the computer. Generally undetectable unless the game is able to identify unnatural mouse movements.
>it can be run on external hardware that uses a capture card to analyze your video feed and alter your mouse inputs to the computer.
I think at some point defeating this becomes impossible. This sort of cheating isn't much different conceptually from just having someone who's really good at the game play for you.