Stable coins can't do anything about poverty, rather unstable coins would help for those who are smarter in crypto currency system. Currently, most coins have losed their values for example, if someone buys a coin thinking it would pump and they will get double of their income right now that would make the person end up in a very big mess. Crypto currency is going through a little decrement right now, crypto currency  investors are somehow on the losing side of it now.