Lay down a layer of rock landscaping over landscaping fabric around a home in suburban Minnesota without maintaining it (e.g. by aggressively applying weed preventer and weeding it) and in 3-5 years it will be covered with native prairie grasses and weeds growing between and around the rock.
It does not. I lived in the midwest for the majority of my life and never once had to water my lawn to keep everything green and alive.
Ok then they'll use it up and the problem will solve itself.
I don't agree that you can live there and have the infrastructure to support jobs, food etc. with "very little impact"
[0] https://jobs.utah.gov/jsp/utalmis/#/occupation/452093/report
Where?
You act like these farms are just there because they like wasting water. Someone is buying the product or they wouldn't exist.
If you want a modern lifestyle deal with it. Deserts are going to have to be used for growing stuff.