A dashboard is a decision surface
A dashboard is not just a place to display numbers. In operations software, a dashboard should help someone notice what needs attention and decide what to do next.
A useful dashboard metric connects to a real workflow. It might show work that is unassigned, overdue, high priority, waiting on a client, or ready for review. The number matters because it points to an action.
This is why decorative totals are not enough. A dashboard should help the team move work, not only make the screen look busy.
If a metric does not change a decision, it may not belong on the first dashboard.