The contrast between Thin Ice Breaker and Sukuna’s World Cutting Slash explains why Gojo survived the former's theoretical concept but fell to the King of Curses in chapter 236. Gege Akutami established a clear hierarchy of spatial manipulation throughout the Culling Game and Shinjuku arcs.
During Gojo versus Sukuna, Mahoraga acted as an analytical blueprint. Mahoraga’s initial adaptation to Infinity merely altered its own cursed energy nature, neutralizing the barrier like Domain Amplification. Sukuna rejected that method because he could not alter his cursed energy properties at will. Instead, Sukuna waited for Mahoraga's second adaptation: Mahoraga expanded the definition of its attack. It stopped targeting Gojo and instead targeted the canvas of existence.
Sukuna copied this adaptation. His World Splitting Dismantle did not send a blade flying toward Gojo to cut him; it targeted the coordinate space, the fabric of the universe, and the reality where Gojo existed. As Sukuna explained, as long as that space existed, everything occupying that space was cleaved in two, rendering Infinity irrelevant because the barrier existed *within* the severed reality.
Thin Ice Breaker never operated on that ontological tier. Uro does not cut existence. She warps the air. She relies on the physical properties of the atmosphere, distorting it like flexible glass. Striking distorted air creates a medium shockwave, not an existential severance. Conflating Uro’s technique with Sukuna’s spatial slash ignores the fundamental gap between environmental deformation and reality-erasing coordinate targeting.
