Even the Kardashev scale is based on the assumption that unfettered economic activity as humans conceived of it in the mid 20th century would be a common enough phenomenon to classify, including shoehorning in our wildest science fiction ideas. Only the most unscrupulous of our species probably want to maximize production of widgets beyond the limits of this planet to the point where a Dyson sphere must be built. Would a Buddhist monk have any interest in that for example, or are their metrics of “productivity” more metaphysical perhaps? Or someone considering preserving a system and not exceeding what it is capable of sustainably offering? How about a blue whale, do they have an increasing energy demand per capita as well?