Considering those rent prices (location location location!), if you don't have a good-paying job you're not going to stay there long. No unemployment entitlement is going to cover three years of renting a one-bedroom apartment renting at twice the mortgage on a four-bedroom one-acre-lot house conveniently outside Atlanta. Of course the unemployment rate plummeted: surely sky-high rent drove out anyone not able to keep or get a high-salary job.
Author focuses on availability of new units, and marvels at the low vacancy rate, without addressing the turnover of old units. It's a limited supply of high-desirability housing; either pay a high price or get out, there's a line of people waiting for openings and willing to pay premium prices to get in. Of course unemployment is low and prices high there.