https://www.zerohedge.com/markets/elon-musk-slams-extinctionist-movement-who-see-humans-plague
Unfortunately, there is a plan to place most of the population under a carbon control system. Ultimately, a person would have to constantly ask for permission to do just about anything.
https://gizmodo.com/elon-musk-tesla-spacex-dropping-birthrates-1851540740
A human herd breeding permit would only be granted according to what the AI-Technocracy (AIT) Control System dictates. Like some occasional intercontinental air travel, the AIT would have to determine if you haven't exceed your monthly carbon credit allotment.
https://worldpopulationhistory.org/carrying-capacity
Its like someone or something really wants to eventually have total control over humanity. Of course that includes population control and population reduction.
https://www.science.org.au/curious/earth-environment/how-many-people-can-earth-actually-support
Elon+Musk seems to want more of a Star_Trek like future, but not controlled by villains such as The Borg_Collective. While on the surface, an AI human herd management and population reduction program might seem good for the environment, the world would become like a totalitarian composite of various Sci-Fi scenarios.
https://thedigitallabyrinth.blogspot.com/search?q=Elon+Musk+Slams+the+Human+Extinction+Movement