It is important for not all work in the Sprint to relate directly to the Sprint Goal to allow for flexibility in addressing other necessary tasks. While the Sprint Goal provides focus, the team may need to tackle various maintenance tasks, improvements, or urgent issues that arise during the Sprint.
This approach ensures that the team can balance achieving the Sprint Goal with addressing other important work. By doing so, the team maintains overall productivity and responsiveness to unforeseen challenges, while still progressing towards the main objective of the Sprint.