[ianai]

I think the underlying argument also misses the “willingness to pay” on at least a couple parts of the transaction. Specifically assuming the grid provider is going to pay you to use their electricity. (Transmission is still costly and maybe turning off capacity is a better option.) Further, missing the core “willingness to pay” for btc or any other cryptocurrency.

Gold worked as a currency as it was independently verifiable from either side of a transaction. Modern currencies work so long as they’re backed by credible assurances of their value. Ie passing off fakes is dangerous and they may be used as “legal tender.” (That term could itself be further defined via google.) crypto currencies seem to lack this functionality. (Not wanting to abide by any law outside core network mechanics is functionally close to establishing a new form of sovereignty. Only sovereignty doesn’t work like that.) Also note how hyperinflation is dangerous to the assurance of value of a currency. Similarly, any form of instability could shake those assurances.

Modern currency is also almost trivially, embarrassingly parallel.