He's arguing that customers don't have to be satisfied with letting the offending party decide what "making the victim whole" looks like. Which is true.
Well, if rat feces appeared in the soup because rats chewed their way to the kitchen through the wall from neighbour's basement and you like this restaurant for their quality service and food, then I think you'd like to accept such coupon after they fixed up that hole in a wall and dropped rat poison into the cellar.
"Sorry about the rat feces in your soup, here's a coupon for another free visit."