It’s not a fact. You have no idea what the “correct” population of the world should be. Dopes like you were talking about overpopulation 100 years ago. Fast forward to today and the US population is 4x larger and there’s an obesity epidemic.
Overpopulation causes more problems than starvation.
Effects of Human OverpopulationHuman overpopulation is among the most pressing environmental issues, silently aggravating the forces behind global warming, environmental pollution, habitat loss, the sixth mass extinction, intensive farming practices and the consumption of finite natural resources, such as fresh water, arable land and fossil fuels, at speeds faster than their rate of regeneration. However, ecological issues are just the beginning...
Increased Emergence of New Epidemics and PandemicsA WHO report shows that environmental degradation, combined with the growth in world population, is a major cause of the rapid increase in human diseases, which contributes to the malnutrition of 3.7 billion people worldwide, making them more susceptible to disease.
Less Freedom, More RestrictionsAs population densities increase, laws, which serve as a primary social mediator of relations between people, will more frequently regulate interactions between humans and develop a need for more rules and restrictions to regulate these interactions. Aldous Huxley predicted in 1958 that democracy is threatened due to overpopulation and could give rise to totalitarian style governments and it turns out he was right.
Elevated Crime RateAs human overpopulation drives resources and basic necessities, such as food and water, to become scarcer, there will be increased competitiveness for these resources which leads to elevated crime rates due to drug cartels and theft by people in order to survive.
https://www.everythingconnects.org/overpopulation-effects.html