Neither the title nor the article use the word "median" - they appear to be using the concept of "Fair Market Rents" (FMR), which is a 40th percentile[1] of non-sub-standard units.

The article calls out that even the _average_ wage earner can't afford an FMR unit in many states:

> For a two-bedroom rental, the Housing Wage is $22.96—a figure that’s higher than average renters’ wages everywhere, and at least $5.00 higher than the average wage for renters in 16 states. For a one-bedroom rental, the Housing Wage is $18.65.

[1] https://www.huduser.gov/Periodicals/ushmc/winter98/summary-2...