It really has nothing substantive to say except "I'm struggling, pay me more."
She even points to several facts in her article.
"She ended up leaving the company and moving east, somewhere the minimum wage could double as a living wage."
"But boy did I not anticipate a decade and a half ago that a car and a credit card and an apartment would all be symbols of stress, not success."
If you hate the job that badly or feel like you're not being renumerated properly, you have options open. I'm assuming she doesn't have a house, because of the mention of her apartment.
Yelp is not holding a gun to your head. Neither are they responsible for paying you what you think is necessary for a comfortable life.