From a humankind point of view it registers in most brains. From a sense of law, order and to avoid societal collapse, capitalism requires growth. The world's population will continue to grow in absolute terms, but the rate of growth is slowing. The growth rate peaked in 1968, but is now slowing. Buy 2,100 the population is expected to level out at about 11 billion then stay level or even decline.
Some countries will experience a decline (and already are). The most growth will come from Africa. Already many countries with a need to sustain growth see Africa as a contributor to human capital.
Countries that cannot harness AI or robots to supplement humans will see a net decline.
One other point to make, if you can outbreed JRM then you can potentially outrun his DNA. That's seriously worth thinking about.