I think I need more info. It seems like userspace is very hackable, so thus kernel level anti-cheat was born to control stuff like synthetic inputs and manipulation of memory / frame analysis. This anti-cheat would be held together by the fact that the kernel/drivers are proprietary and not very easy to edit. Obviously still possible because it’s on your own computer, but challenging and invasive. Do I have that right?
In which case I don’t see how going back to userspace would help. What is the solution? There probably isn’t one outside of hardware (buying a hacking chip and soldering it in is annoying for most)
When I was doing game dev we focussed on AI-style analytics of user behavior. Of course a good enough bot could always look human. A real cat and mouse game wasting lots of time