A ruler's downfall is often marked not just by the loss of power, but by the very manner in which their life ends. The impending punishment decreed by God is a cruel, humiliating, and entirely unnatural death. Rather than passing away with the dignity expected of a king or a person of high status, the condemned will suffer a disgraceful end typical of the wicked [מלבי״ם, ביאור שטיינזלץ].
The primary approach among commentators is that being likened to the uncircumcised does not refer to a physical state. Instead, it describes those who are uncircumcised in heart—people who are deeply wicked, lowly, and despised. The death will mirror the lives of such individuals, characterized by profound humiliation rather than honor. Furthermore, this end will not come about through natural causes. It will be a violent execution carried out by the hands of others [מצודת דוד].
This harsh decree is sealed with absolute certainty. Because God Himself has spoken it, the punishment is guaranteed to happen. He possesses the ultimate power to fulfill His word and bring the judgment to reality [מצודת דוד].