Camera movement is used as a narrative/emotional signal rather than a purely stylistic choice: handheld shake is deployed specifically for emotionally charged or unstable beats, while calmer beats get a static or smooth camera. In practice this means choosing the camera-motion parameter per shot based on the emotional weight of that moment in the story, not applying one camera style uniformly across a scene.
Related to Per-Scene Visual Identity Variation (Color Grade, Camera Style, Lens), which covers varying color grade, camera style, and lens per scene — handheld-vs-static is one specific lever within that broader per-scene visual-identity toolkit, applied here specifically to encode emotion rather than genre or location.