Well as I said, when I see irrigation while it is raining it is hard to not think it would save water with a rachio or similar. I had one from the beginning on, so I cannot compare water usage, but I think there are enough examples in this community. I can see how often my sprinkler runs and I know how often it simply would have run unnecessary. There is also some common sense.
Question is where do you incentive and not. Some people cool their house to 68 degree in summer in Texas, some to 75 or more. Some shower 5 minutes some 20minutes. But I think having efficient appliances and smart appliances that save water, gas or power are obviously helping.