I don't think this is true at all. If you don't have AI then either you build what you need to build and learn how to do it along the way, or you build nothing and learn nothing. There is no option to build something but learn nothing, but that's the default outcome with AI. To learn how to build something AI built for you, you need to build it again on your own, which I dare say very few AI users are doing for nontrivial projects.