TL;DR: A charismatic Nigerian architect conned Western journalists and philanthropists into thinking he had built an innovative new school structure for serving a slum. He accepted their accolades, press, and prize money even though the school never once actually held classes, and it collapsed in a storm shortly thereafter.
It's also worth noting that the "con" has resulted in the architect having a position as a "Design Critic" at Harvard and he's been a visiting lecturer at quite a few other universities.
There is a lot of mixed interests colliding here. Is strange how few we know about a country that has 206 millions of citizens. Much bigger than Mexico, Russia, UK or Japan.
I don't see any problem with the architect receiving fame for the project. The only people that will never fail are those that never tried anything. It seems like a good idea poorly executed. The first airplanes were also ridiculously fragile structures if we think about it.
The government basically blocked the project until their momentum was lost. If the problem was that the structure was unsafe, nothing prevented them to use a few petrodollars to fix it or build a better one with a more experienced team of architects. They could do a lot of things, but choose to sit and watch the structure rooting or being dismantled one piece at a time by locals.
It seems also that the locals didn't wanted to support the school. To allocate resources was not a priority for them, and they expected instead for other people overseas paying for the education of his children. A low interest in education and high rate of dropouts is seem often in places taken by narcos or corruption, where illegal activities are much more profitable and appealing to youngsters
As the people was emotionally detached from the project It was useless as source of popularity for the politicians in power. It was obvious also that the project was nurturing some new community leaders. Ambitious people calling themselves "the boss", that were earning some social support and could easily jump to politics later competing for the power. I bet that politicians in power hated that.
Eventually everybody started quitting the project and the only people remaining onboard tried to keep the scam alive for as many time as they could, faking that the school was now just a facade to keep milking donors.
This reminds me to other projects that seemed great in paper but are robbed in the process, or disappear without a trace, like those big balls of bamboo moved by wind that were claimed to be the future of war mine cleaning in poor countries.
This is, like, a metaphor for something.
ETA: For contrast, here's a credulous article about the floating school from before it fell apart: https://urbannext.net/makoko-floating-school/.