[Schaulustiger]

To be honest, I don't think that NodeSchool intends to give a primer on how to build a production-ready balance manager. They want to teach the basics of JS, that's all.

I agree, though, that those learning services give the impression that it's just about learning how to code and maybe use some design patterns. You won't find a security/authentication course on FreeCodeCamp or one about codebase maintainability, which is a shame.