Huh that doesn't seem true at all. Even if you lower the amount of children 20 times then there still would be hundreds of thousands of them in the US. This doesn't seem like a problem at all. Actually it would be a blessing since those children could receive way better education compared to now.
There would be but 20 times less then now. For instance New York has over 1500 playgrounds. That would become 75. I wouldn't call that hardly any. I can't easily find the number but I bet there are far less Apple stores in NY for instance. And I wouldn't say there are hardly any of them. Besides imagine the godly playgrounds we could build of we had 20x the budget for each one.