The head of Russia’s upper house of parliament needs to visit cities in India. No way mankind is going extinct for hundreds of millenniums there. The density of population is surreal. Russia is practically empty in comparison. How do parents living in a 1 room apartment with 6+ children manage to produce more? But they do in India!
India is child abuse.
India has always had 15% or more of humanity - the subcontinent has insanely fertile soil.
But the fertility rate has dropped to 2.4 children per woman.
You can’t compare the two countries - India is mostly fertile land, Russia is mostly infertile.