According to the article so far 36 people live there. out of the expected 1.000 people who will reside there when the development is finished in 2025
I think you should wait till everyone has moved in, and then give it a year or two, and then write an article about how people are much happier there.
I have confidence that results probably would not change that much since the development is custom built and hyped as a car-free place to live.
It will attract people who are looking for that and you would think they would be happy.
However, you cannot use this as an argument that people in general would be happier with such changes, since you start out with a highly biased sample.
I have nothing against walkable neighborhoods. It is nice Personally, I have zero desire to live Phoenix Arizona without a car. I have lived there, and it gets insanely hot during the summer.
(a side note: Arizona already has major trouble getting enough water for everyone who lives there already. I dont think expanding the population is sustainable idea)