The dismissal of the security concerns is pretty shallow.

I don't know how many vulnerable drivers the average gamer has installed. I'm sure 'at least some' is a safe assumption. The issue I have with this is that although it may be expected, I don't find it acceptable.

The article presents having this exploitable software on your computer as benign. I don't think that's a particularly healthy attitude, especially in an article oriented towards a more general audience.

The author hasn't had a problem with the anti-cheat software that they like. This is not an argument for why this is a good solution, or why kernel-level anti-cheat is not a security risk. Further, normalising software vulnerabilities weakens whatever case is being made. The more acceptable it is to have broken, exploitable software installed, the more acceptable it will be to ship anti-cheat software that is broken and exploitable.

By the way, on trust: having trust in the vendor is ... inadvisable. I'm not saying it's guaranteed to backfire, but it can only backfire in one direction. The situation in which you trust an entity with goals that are (at best) unaligned with your own is better described as one where they have leverage over you.