In my experience, just in the US the desert air is really dry.
The expression "but it is dry heat", is true.
I find hot desert weather much better than hot weather in humid areas.
I cant see this scaling.
There is not much water to collect to begin with.
A person using it sure.
A platoon sure.
But if a city of 2000 people started using I cant see it working well.
Further the moisture extracted from the air in that city would
mean even drier air in other places?
Agree, yeah. Despite the lead of "more than a third of the world’s population lives in drylands", I would see this as being much more applicable to transient usage than long term. A few litres of lukewarm water per day would be perfect for backcountry camping, or topping up the reservoir in an RV, or something. But for anywhere even remotely permanent it almost certainly makes more sense to dig a well.
I cant see this scaling. There is not much water to collect to begin with.
A person using it sure. A platoon sure.
But if a city of 2000 people started using I cant see it working well.
Further the moisture extracted from the air in that city would mean even drier air in other places?