From both a technical perspective and if the maintainers of these anti-cheat will consider porting or re-writing kernel level anti-cheat to work on linux, is it possible? Do you think that the maintainers of kernel level anti-cheat will be adamant in not doing it, or that the kernel even supports it or will support it. I think that if it ever happens, there will be a influx of people moving to linux, or abandoning their duelboots, and that alot of people will hate that such a thing is available on linux.
If a person stands to make a lot of money figuring out how to use a regular, non-anticheat kernel then they will do it. It would be a lot less difficult to do when the kernel code is open source.
For anti-cheats, it isn’t the case, as with Windows, where you can semi-trust that the kernel isn’t lying. If an anti-cheat runs and wants to see what DMA devices are connected it uses the kernel to do that and it trusts that the kernel isn’t lying. You could trivially modify the Linux kernel’s source code to not list a specific card when asked by a kernel module.