Still what you are stating is only theory at this points well and the world population clock keeps ticking on. It's kind of like predicting where the crypto market will be tomorrow, next week, or a year from now. China is also known to have already instituted population control in urban areas requiring citizens to have "permission" to have a child. The almost slave-like conditions of rural Chinese with poverty level supplies of food and water has deterred population growth because hey, who wants to have a child when you can't even feed yourself. Looking to China for an example or demonstration of proof lacks credibility because of this. I'm really not overly worried either way, like I said we will both be long dead before this proves out. As long as the replacement number is above 1.0 worldwide the population is growing.