Cryptocurrency won't help solve that root problem for poor people, only for VCs and technologists building themselves new money, exploiting the Cantillon Effect, and casting about for justifications to moon the market price.
To its credit this article came close to discussing this, it actually shows a chart comparing reasons why the unbanked don't have bank accounts. The main reason by far is, no money. But once that's established, then real question becomes - how do you solve that problem using cryptocurrency?
Nobody has an answer for that so they just conveniently skirt around it in these type of discussions.