And those learners learn from those much more experienced than them, by flying and working with them. A tech gets walled off in his own enclosure and has to upgrade to general to sit and learn on air from those with much greater experience and knowledge, particularly so in regards to HF. So for development to work as it does in your analogy, you need a lot more mixing on air of techs with generals and extras. Its that mixing and interaction that causes people to desire to progress though the hobby. A lack of elmers at the local level mixed with younger people do not do clubs, means you need other ways of getting that mixing and encouragement to happen. 40m SSB seems like a good place to start to make that happen.