Re: What are the benefits of cryptocurrency to the illiterate people
This sounds to me like someone are offering a YouTube subscription to a deaf person. 
As stompix said, at least YouTube has subtitles. This would be more like selling deezer/spotify/tidal sub to a deaf person. 
Total illiteracy reduces your chances to be successful by a certain percentage because you will be unable to understand very well many investments information that are complicated
By a certain percebtage? How on earth can you be a successful person (at this day and time) if you don't know how to read and write?Seriously people, stop your 4 lines of how great BTC is for everyone in this universe and think for a moment!
Who has time to actually think through before writing a reply when you need to fill your signature quota?