Earlier quoted context omitted.
It caused harn because it was stupidly implemented not because it's generally bad. But btw. many western countries have a shrinking population since years to a degree where that's an problem. But this also means that the countries which have to take (reasonable) actions include many contribute which often can't afford more reasonable actions :/
What is a non stupid child ban policy you support that doesn't cause harm?
Then temporarily unsterilizing by winning the lottery, points, ability score, merit, money, whatever...
Simple, innit?