Earlier quoted context omitted.
It's more complex than that. People may need stimulation in order to follow through a certain learning process. Providing a structured path and (automated) test means can be stimulating, and can make the difference between (deciding to) learning something or not. Some people are certainly entirely autonomous, but at the very least, there is a spectrum of need for stimulation when approaching a topic of study.
I get you, but, I can get subscriptions elsewhere with way more resources for significantly less.
I’d love a Manning project subscription but it doesn’t exist..