when people (like you) use "productivity" and "value" and "stakeholder" i generally write them off because they are uselessly vague abstractions. its so irritating to simplify things in this way, there's basically nothing to talk about at that level.
Trying to assess productivity without a clear stakeholder and value metric is what's pointlessly abstract. "Did this generate additional profits for shareholders" is a concrete way to measure productivity. "Did this make Mother Earth's vibes better" is not.
