Earlier quoted context omitted.
That's not a relevant analogy. In your example, staying awake during guard duty is your job and it's a proper responsibility. You should be penalized if you fail at your job. I'm saying that tracking milk shouldn't be part of your job, because it's not a good use of people's time. None of it has anything to do with "importance". It's about what is best for the business .
So... how is café latte "best for the business"? Would the business fail if the milk supply ran out?
And you understand that a lot of people don't drink their coffee black?
It seems pretty obvious to me that yes -- having coffee with milk available is very much best for the business. Kind of like having restrooms, chairs, and air conditioning are also best for the business.