2. The Mirror Universe as an emotional trap
Most Mirror episodes lean into camp: evil goatees, twisted uniforms, and characters acting out their darkest impulses for audience amusement. “Shattered Mirror” uses all of that, the swaggering Regent Worf, the sadistic Intendant Kira, the scrappy Terran Rebellion, as a bright, chaotic backdrop to make the Siskos’ private pain feel even more isolating.
The very premise is manipulative in-universe: Jennifer and Smiley lure Jake specifically because they know Benjamin will follow, turning a child’s unresolved grief into a tactical asset, needing his help to prepare their copy of the Defiant they built using the data and schematics Smiley downloaded from DS9's computers for the approaching Klingon-Cardassian Alliance attack.
The episode quietly underlines how monstrous that is by letting Jake bond with Jennifer in stolen, domestic moments on Terok Nor, building the illusion of a family the audience knows cannot last.