Why don't I like the sound of this?

This article on CNET.com makes my skin crawl. I know it's not new information but it just doesn't sit well with me. They say that due to the fact the the microphones are 3 to 4 meters off the ground that they can't pick up normal conversations, but we all know that it won't take much to change that. These are the things that are slowly stealing our privacy and rights.