[ndriscoll]

Obvious, cheap solution (to this controversy): make it optional. If people don't want to install a rootkit, let them play with other people who are willing to play in a rootkit-disabled session. I seem to recall this was how e.g. punk buster worked 20 years ago.

[therein]

This is technically already the case for many games already. For example for EasyAntiCheat, the EAC kernel module won't be loaded unless you join a server with EAC enabled.