Expending energy, labor and capital though doesn’t install value in something, e.g. gold’s value doesn’t come from the cost of mining it.
A thing or something is only ever worth what an individual or a combined market is willing to pay for it.
I personally think Schiff is being disingenuous with his comments regarding BTC. 1 He has always been against it and has a track record of such a stance. 2 While always railing against the manipulation of Both Gold and Silver with the global paper markets (which has been proven time and again) he neglects the fact that BTC and similar Alt currency's are not prone to such a fixing of markets.
The whole Asset/Currency debate aside, It is nigh on impossible to perpetrate fraud, counterfeit, manipulation of the Crypto market as it is outside the control of a central market place made by institutions, such as central banks or governments, while the opposite is true of Gold, Silver and Fiat ( and there is ample evidence of such).
Schiff may claim that he does not believe BTC is a currency, but I guess Millions of people world wide along with thousands of Business' who accept BTC as a payment would disagree. You can spend it, you can swap it for other things, It is fungible.
I might ask is Gold a currency ? Or the Australian dollar ? The AU might well be a currency here in Aus but what steps do I have to go through to spend it in China or Russia ? So say I went to China or Russia, should I carry 50K worth of Gold ? about a KG ? (or a bit less now day's) , 50 K worth of AU Hungies ? or just a phone, a thumbdrive, a QR code, a small piece of paper... the options are endless right.
Which one would I have the greatest chance of spending in Russia or China in the local currency?
And because I can spend it there, just as I can take AU and convert into local currency, it is a currency.
Right now I could use a TenX card anywhere a Visa eftpos service is available and spend BTC or ETH right out of my wallet in local currency there. Soon it will be Pillar + more on the way.
Schiff can rail against this all he likes but there is a dot on the Horizon that is approaching fast