I think the novelty wears off really fast with most people. They certainly were sold on a lie. No one ever believed that they were going to save anyone money, they just introduce the possibility of different charging time-zones, better info for the supply companies, and of course you can be disconnected remotely. In other words all the improvements are the for the supply companies not the consumers.
Having said that, there are times when this benefits you. My company read the meter every day, which means that there is no guessing of the amount I used before and after any tariff change. No having to phone up the supply company on a friday afternoon with meter readings!
And with current prices, some people may constantly monitor their energy consumption. I know mine is always set to display electricity usage now and if I accidentality leave something on I can tell just from the consumption reading.