It isn’t nonsense since no one said for them to use any given percentage of their income for housing. Who are we to decide what is the “correct” percentage anyways? They are free to choose the percentage themselves by balancing the lowest rent possible or increasing their income or budgeting or whatever.What's nonsense is saying someone can afford a place when rent makes up more than 40% of your total income.
Edit: Also, it is misleading to look at whatever the lowest range that you can find is. Looking at the averages presents a better understanding of what is most accessible to most people, and the average 2-bedroom rent in Tennessee is in the $900's.
What is the Cost of Living in Tennessee? - SmartAsset
It isn’t “misleading” to find the lowest range housing for the lowest range of income earners at all. It actually is appropriate.
Now if you want to talk about misleading, that would be your cost of living link. Lower income people will spend below the average, not at the average. There are many, many rentals available in Tennessee below the average they use (which is skewed by including higher costing locales within it). A simple web search can find them. So I don’t accept your site’s figures.