Earlier quoted context omitted.
It's simpler than that. For a PoW blockchain based digital economy, the energy waste would scale much faster than the growth of said economy. There's lots of energy in space, but only so much of it is accessible at any given level - I would not like 99%+ of that to be dedicated to keeping the blockchain going. Today, this may be increasing fraction of energy generation on the planet. In 50 years, this may be dedicate…
Ok, “Nah” noted. But for the past billions of years, the same resources have been “wasted” throughout the entire uncountable universe. Dismantling a few planets around a few stars to build Bitcoin mining infrastructure is not remotely problematic for a K3 civilization, for instance. The argument that because humanity is wasting it it’s bad seems faulty.
So with K3 civilization, we're not talking about dismantling a few planets - but rather dismantling the neighbourhood galaxies.