Dude there's no such thing as a population problem, that's entirely a myth. The only real limit to progress is how fast people make new products and services, push science and tech, etc.
Also we need a vastly better child rearing and educational philosophy. The K-12 school system is complete garbage that makes kids hate the learning process. It's need to be less structured and kids need to have more agency in terms of pursuing their academic interests from a young age. What we want is differentiation and to stop using school as a cookie cutter.