"it's blind and shows a lack of imagination."
No, what it shows is a lack of paranoia. My point about identifying information was that we already trust these companies with information that can do a great deal more harm if lost, stolen or sold. What i see in the links you provided is a lot of scare tactics using words like "potentially" and "could be". Obviously this is a reason to ban smart meters immediately rather than add usage data to the other private information they can't disclose without our approval.
What is this terrifying information anyway? Using my smart meter, they now know that at 6:00pm, i turn on several appliances that draw more power. they reason it could possibly be a microwave oven and a tv. or maybe i'm washing dishes and watching tv. or maybe i'm welding. wow. that's scary. Then maybe they notice that on the weekend, i use a lot of power. egads! those advertisers must be foaming at the mouth for this kind of information. Imagine their amazement when they learn that middle class Americans watch TV and cook in the evenings and spend more time at home on the weekend than they do during the week. It's a veritable gold mine I tell ya. It takes a large tinfoil hat to believe these meters will identify anything that could not be guessed at by anyone.
Smart assery aside, there are much more real and damaging threats to people's privacy than some magic box that could possibly be reading your electrical lines for information that's much easier to get at. advertisers can already determine what you buy, where you go and what you do with far more accuracy by using existing sources of information.