What are the benefits of cryptocurrency to the illiterate people?
I don't think there are any actual benefits over fiat money for them unfortunately. Cryptocurrencies are still difficult to use safely, and if you are not able to
Do Your Own Research(DYOR) when you buy or use some crytpocurrencies you're very likely to get scammed or robbed at the end, and if you can't even read basic documentation for users, you are very likely to make mistakes and to lose your funds.