> My understanding is that the monitor doesn't do anything by itself

The understanding should also included that unless LG actually asked Microsoft to implement this autoinstalling malware, it wouldn't have been installed by itself.

I think parent commentator is making the argument that they don't want to financially support companies who engage in these sort of things, regardless if this particular scenario applies to their environment or not.

Sure, but I was addressing the question that was asked (although perhaps it was asked rhetorically): LG cannot do this to you if you don't install their proprietary software, so Linux users are safe (assuming they use a trustworthy distro).

You could choose to buy from another vendor, but other vendors have the same incentives to abuse your trust in the same way once they manage to persuade you into running their proprietary software on your machine.