Productivity is important, even if the immaterial aspects that contribute to it can’t be precisely measured.
Productivity is the reason that only 2% the population works in agriculture and the only way we can afford to maintain a space station.
Of course there are MBA grifters who are pumping out articles about how you can measure and optimize human relationships and of course, most of these are bunk. But that doesn’t mean that productivity doesn’t exist or isn’t useful or isn’t worth thinking about how to optimize.