Not all human population is going to crash. Africa population in 1950 was 228.7 million, in 2025 is 1549 million. Fertility rate in 2025 is 4.05.

https://www.macrotrends.net/global-metrics/countries/afr/afr...

Africa's fertility rate is dropping fast: 40 years it was above 6, 20 years ago it was above 5, and it dropped by 0.6 in the last ten years.

https://www.macrotrends.net/global-metrics/countries/afr/afr...

most projections expect Africa's population to peak around 2070, which is less than the timeframe GP considered.

Could you share these projections that say Africa's population is going to peak around 2070. I cannot find any.

actually I may have mis-remembered this, sorry. Possibly I was thinking of population change peaking, but I can't say for sure.

https://population.un.org/wpp/graphs?loc=903&type=Probabilis...