If everyone around the world gets into cryptocurrency, do you think it will even help in solving or lessen socioeconomic problems? Can it be used to buy goods from other countries? It is fair to say that crypto will help a lot of people but what will it do to one's country? Will it help improve a country's economy?
It doesn't really matter what is used by people as a medium of exchange. Better technology, worse technology it won't eliminate spoiled human nature which is realized in greed and excessive selfishness. So I don't think that cryptocurrency using can solve important social and economic problems.