None of the things needed for a true kernel level anti cheat are in a translation layer, some of them just can't be. It's why games with actual kernel level anti cheat have never worked in proton and never will. Historically the only way to play those games is either be on windows or use a vfio virtual machine (which also probably won't work even with tons of vm hiding techniques depends on just how sensitive the ac is) . Wine/proton simply can't translate the upper parts of the nt kernel needed for it.

If the anti cheat is working in wine/proton it's not kernel level