[At current birth rates, the world population will continue to grow until about 2080, when it is expected to peak around 10.8 billion people.
But the decline in birth rates has also been accompanied by a similarly steep decline in infant mortality, which obviates the need to have more children in order to have a better chance of having kids who live long enough to reproduce.
Free and open access to global development data
data.worldbank.org
What Musk and the fertility rate warriors keep ignoring (or more glossing over) is that the population in Africa is still growing very fast. They just don’t like where it is growing.
The population is already too great for our resources but an eventually declining population also will have long-term impacts that do need to be planned for and reckoned with.