User space applications can't access hardware or physical memory. They can't bypass permissions enforced by the OS. None of that applies to hardware or kernel drivers.
> This isn’t giving us any surveillance capability we didn’t already have. If we cared about grandma’s secret recipe for the perfect Christmas casserole, we’d find no issue in obtaining it strictly from user-mode and then selling it to The Food Network. The purpose of this upgrade is to monitor system state for integrity (so we can trust our data) and to make it harder for cheaters to tamper with our games (so you can’t blame aimbots for personal failure).
When you install a hardware device you are trusting the manufacturer with full access to your machine, so installing a driver does not give them any more powers. You have already "unlocked the door".
When you install a game that runs on user space you are not trusting the vendor nearly as much as you are trusting a hardware manufacturer. Installing a kernel anti cheat is granting them a level of trust and access to your machine that they didn't have before.
I'm not sure where this trust comes from. I absolutely do not trust any hardware vendor. I just have no choice here.