This doesn't matter at all. It's a flaw in principle, which will sooner or later manifest. This is the case for any definition of "work" the system encodes, tha

This doesn't matter at all. It's a flaw in principle, which will sooner or later manifest. This is the case for any definition of "work" the system encodes, that comes down to the fatalistic reductionism of "increasing entropy". At some point your house becomes an oven, while the systems starts folding random amino acid chains. 'Work' cannot be losslessly reduced to heat generation and market value does not represent contribution to human welfare. It's the fallacy of conflating correlation with causation, when the free market economic systems aligns with human interests for a moment. And PoW crypto currencies aim for giving up all governance control to this fallacy. Earth becoming absolutely oxidized into a lifeless rock a valid possible equilibrium for free market economic systems.