I sympathize with the barista here, but mindset that customers need to cover 10 to 20% of his income is symptom of decades of brainwashing of employees and customers alike. In this case NPR is part of this brainwashing. I will not tip someone for doing their job. I will only tip when I feel it is needed based on the service provided.
NPR had the audacity to use a picture of a worker protesting for a living wage in this article. They completely miss the point of the protests and overall labor movement if they think it’s a customers responsibility to pay workers right.