Author then deducts all the things that apply to every job - taxes, commuting, etc. and concludes she makes a take-home $9/hour, which is still above federal (and North Carolina where she is working) minimum wage. Of course, living wage is much higher than that in Asheville where I believe she lives [1].
And to those wondering, yes Waffle House does offer insurance and a few other benefits [2].
[1] https://www.citizen-times.com/story/news/2023/03/02/ashevill...