Stable currency can never solve poverty. Hard work to eradicate poverty is also a major part of the achievement of economic growth. Although poverty has been alleviated due to the continuous and stable growth of GDP with the increase in human income, there is no alternative to work. Many people get money but can't use it properly some people alleviate their poverty by using a small amount of money properly. It will usually depend on the individual.
The only thing that can solve poverty is these factors, enough work for everyone with a decent salary and financial management knowledge. Taking out one of the stated factors will never solve poverty. Creating stablecoins and distributing them to everyone will don't have any effect on poverty. For a reason that created stablecoin without any financial backing will never be use to pay for foods, bills, and any items that need monetary value for exchange.