Earlier quoted context omitted.
> Calling out the BTC network on its energetic inefficiency completely misses the point that the work put into the network is exactly the scarce digital asset, and hence the store of value. Why would that matter? The problem is the huge amount of greenhouse gases getting released because of this store of value. Whether it makes some economic sense or not is irrelevant to the discussion of whether it should be allowed…
2 things are about to happen in the bitcoin space. The size of transistor in the bitcoin miners is hitting a wall. The bitcoin market will either drive alternative energy efficiency in the chase of profits, or it will drive new technologies to lower the node size. Both will be a benefit to mankind.
You could invent a dramatically more efficient way to calculate hashes - after a short period of readjustment, the network would go back to consuming just as much power as it does now.
You could find a way of generating power more cheaply. The network will then use much more of it.
Energy requirements continue to grow until an equilibrium is reached. That equilibrium occurs when the energy cost to mine new blocks is commensurate with the value received from doing so.
However, miners who can externalise their energy costs will generally outcompete miners who cannot. Incentives to damage the environment and avoid taking resposnibility are built into the system.