Both the argument and your counter argument are discussed by Lyn Alden here: https://www.lynalden.com/cryptocurrencies/ https://www.lynalden.com/cryptocurrencie

Both the argument and your counter argument are discussed by Lyn Alden here: https://www.lynalden.com/cryptocurrencies/ https://www.lynalden.com/cryptocurrencies/. She proposes three ways, including valuing cryptocurrency as we do precious metals.