Ive seen it suggested from others/content-creators that valve or some other finacially involved company should make their own distro or simply a kernel that would have built in killswitch that flags the user when they fail required modification checks and prevents online play.

What really needs to happen is the eventual mass exodus from windows due to its continued enshitification. The increase in linux users + any notable figures like pro gamers or content creators that switch over to linux will force game developers financially to open anticheat to linux users and make a blanket solution.