Just look at the language and propositions in this article. To the extent that ANY idea is presented there, it is to educate the ignorant - the patronising overtones are evident in the article.

The West, like the article, is obsessed with "Capitalism" which creates winners and losers as do all competitive approaches to anything. How can any suggestion for the slums work by promoting that process?

What FORCES us to compete is fundamentally the fact that LAND, a gift of nature necessary for our life (shelter & food) has been stolen Capitalism & sold to the highest bidder. When an element for life is commodified, people must compete against each other to live. The effect is as we see - some get richer others get poorer.

If we are looking for a way forward for those at the very bottom already it must be through cooperation. That would require a restoration of commons for food AND SHELTER. With that as a secure foundation, people can cooperate to achieve ANYTHING they want - food security, bricks for housing ... ANYTHING!
see https://www.facebook.com/pages/Dump-Dead-Ends/104691386264704?id=104691386264704&sk=info

Yet another example of the futility of trying to develop without family planning. With high population growth there is a high cost to tread water. The author might have mentioned this fact.