.... Buuut you can still defeat Kernel level Anti Cheats.

https://m.youtube.com/watch?v=RwzIq04vd0M&t=2s&pp=2AECkAIB

Which means that you still have to end up relying on reviewing a player's performance and actions as recorded by the game servers statistically via complex statistical algorithms or machine learning to detect impossibly abnormal activity.

... Which is what VAC has been doing, without kernel level, for over a decade.

All that is gained from pushing AC to the kernel level is you ruin the privacy and system stability of everyone using it.

You don't actually stop cheating.

It is not possible to have a 100% full proof anti cheat system.

There will always be new, cleverer exploitation methods, just as there are with literally all other kinds of computer software, which all have new exploits that are detected and triaged basically every day.

But you do have a choice between using an anti cheat method that is insanely invasive and potentially dangerous to all your users, and one that is not.