Productivity doesn't always mean how much faster you get something done, sometimes productivity is whether or not you actually do something.
I learned this lesson almost 20 years ago. And there are some people who view Man Hours as a sunk cost (no value). They don't see the value in upgrading / speeding up a process. They don't see it, because to them whatever it is costing to get the improvement isn't worth it, even if it would be worth in in spades. They just don't see man hours as anything other than static cost.
But sometimes, the efficiency is such that it makes the difference