How is foulons punishment an example of poetic justice?

Foulon's punishment, where he was killed and had grass stuffed into his mouth, can be seen as an example of poetic justice because Foulon had callously remarked that the starving peasants could eat grass. By receiving a similar fate, Foulon experienced a form of retribution that mirrored his lack of empathy towards others. This outcome highlights the idea that one's actions can come back to haunt them in a fitting way.