This is a great writeup.

It looks like this driver is being actively used in malware, too: https://www.fortinet.com/blog/threat-research/interlock-rans...

Anti-cheat drivers have indeed turned out to be major security risks on Windows. But I think the blame should not be on game developers because kernel-mode anti-cheat is still one of the only methods that’s reasonably effective — and realistically, you can’t expect every game studio to have the expertise to write secure, reliable kernel drivers.

If Microsoft wants Windows to be more stable and secure, they should provide built-in anti-cheat support in the OS. That would reduce the need for third-party kernel drivers in the first place.