Apart from that you don't want to have the volatility of most crypto to be a means of payment. "wait, my hard earned products are now worth 50 % less than an hour ago because some influencer in his basements mom did a rugpull?"
I'm sure that a ban on proof-of-work mining would cause an equivalent or greater amount of damage to the value of various "coins". At least with actual metal coins you can melt them down and make things from the metal should the coin devalue unexpectedly.
This is a strawman that assumes choosing between the volatility of a memecoin or USD/Euro when the reality of the situation being discussed is choosing between the volatility of a USD-pegged stablecoin vs. that of a developing nation's currency.
