Isn't it a little naive to think that this one, single voice acting opportunity will be enough to magically turn their lives around, and get them out of the gangs and into a legitimate career? And no, it's probably not gonna lead to a career in VO. For just some throwaway role, they're probably being paid about $800. That's almost a month of rent, and nowhere near enough to start a new life. Maybe more if they're getting credit for supervising the script. Still, I wouldn't bet it's enough to turn their life around.
I don't know how to feel about this, really. For me, it's more about the fact that they'll probably suck at delivering their lines--they're not actors, after all.