Cryptocurrencies do have an amazing potential to help citizens of the global south, especially ones in AES countries held back by economic sanctions.
North Korea also uses it to get funds IIRC.
With that being said, it's still incredibly damaging to the planet - and systems that don't use proof-of-work are mostly just fiction in terms of wide-scale use.
Proof-of-Stake is literally just rich people get richer, but codified. You could argue that Proof-of-Work is the same thing, as money buys mining rigs which give money. You could also argue that that's true for Capitalism in general, as money makes money which in turn makes more money.
North Korea also uses it to get funds IIRC.
With that being said, it's still incredibly damaging to the planet - and systems that don't use proof-of-work are mostly just fiction in terms of wide-scale use.
Proof-of-Stake is literally just rich people get richer, but codified. You could argue that Proof-of-Work is the same thing, as money buys mining rigs which give money. You could also argue that that's true for Capitalism in general, as money makes money which in turn makes more money.