> 'security feature' of BTC, which happens to be related to energy has nothing to do with currency it's literally the mechanism that solves double spend proble

> 'security feature' of BTC, which happens to be related to energy has nothing to do with currency it's literally the mechanism that solves double spend problem, which i'm pretty sure is quite important for a currency and to my knowledge wasn't solvable in trustless manner prior to bitcoin.