Dispatching change events after programmatically changing checkbox states is crucial for maintaining event-driven architectures. Important aspects: 1) Ensures all change event listeners are notified of the programmatic change, 2) Maintains consistency between the DOM state and application logic, 3) Allows other components to react to the changes, 4) Mimics user interaction for consistent behavior. The bubbles: true option ensures the event propagates up the DOM tree, maintaining event delegation patterns.