Among the things that are unfortunate about cryptocurrency as a model is the fact that it's not immune to the general capital-breeds-capital effect. For proof of stake, people with money to spare are likely to have newly-minted money granted to them in the future. For proof of work, people with money to spare can afford to buy the rigs to increase the odds they have newly-minted money granted to them in the future. I think it's fair to ask what the net benefit is to society for a wealth-distribution system to give more money to those who have the most money.
Fiat currency has issues, but at least a government has the authority to conjure money out of nothing and hand it to the poor.
Fiat currency has issues, but at least a government has the authority to conjure money out of nothing and hand it to the poor.