I don't think that's the case. The article specifically mentions multi-family units:
> Austin, TX presents the clearest example of this trend. From 2021 to 2023, an average of 9.9 multifamily units were permitted for every 1,000 existing residents in the Austin metro, by far the highest rate among the nation’s 50 largest metros. As these new units have gradually reached completion, the median rent in the Austin metro has fallen by 7.3 percent over the past year, which also ranks first among the top 50 metros.
> Austin, TX presents the clearest example of this trend. From 2021 to 2023, an average of 9.9 multifamily units were permitted for every 1,000 existing residents in the Austin metro, by far the highest rate among the nation’s 50 largest metros. As these new units have gradually reached completion, the median rent in the Austin metro has fallen by 7.3 percent over the past year, which also ranks first among the top 50 metros.