Doesn’t matter what you think really though, right? These businesses operate on measurable KPIs and if overall thresholds weren’t being hit, something would happen.
If you were a manager with that attitude, you’d be a micro manager and we all know that that type of manager, in any sector, SUCKS.
Also, your fixation here is on pennies and not dollars. Large systems account for waste and allow for less precise action. They do that because they know that enables less logistical slowdown on average and overall they will be more successful in big picture.
As you grow, you’ll learn to focus on broad strategy and not get lost in fixation on individual tactics. Set good policy and allow people room within to figure it out - without a bummer of a nag in middle management meandering around trying to save pennies at the cost of dollars to justify their existence.