...Did you read the article, or just the title?
This article is about giving money directly to Kenyan villagers, and in a different program to families in Mexico; and about how they've used the money on productive improvements like replacing thatched roofs with metal ones.
It also acknowledges that this might not be the most effective approach, but that it's being tried in these contexts and deserves further study.
This seems like a rather different context than misused American welfare dollars... and it seems unlikely to me that "low IQ" is a sufficient explanation for third-world village poverty.