The tl;dr from the post is that kernel anti-cheat presents both an attack vector for malware and a backdoor for firms. The former is already known to be exploited.

I don't know why comments here are so negative. PC gamers should be wary of installing this stuff, and PC users in general wary of attempts to lock down their computer. If game companies want a fully locked down PC, they already have one; it's called a console.