Illiteracy simply means the inability of someone to read and write, and as such, that people don't know how to read and write, it should stop them from owning assets, of which Bitcoin/cryptocurrency are all digital assets that could be own by anyone, either literate or not, in as much as you understand the concept, the basic fundamentals, and is ready and willing to accept the risk involve in Bitcoin investment. Because apart from the general benefit Crypto/Bitcoin has (i.e ability to be in control of your own finance), Crypto has no special benefits to either literate or illeterate.