I get what you’re saying. It is a really weird phenomenon that:

1) Everyone has basically the same problem (learning a language).

2) Many people are building their own tools.

3) Most people are dissatisfied with the tools available.

I have a hard time believing that there is no more efficient way possible than conversing with native speakers as one commenter seemed to suggest.

I also don’t believe the “procrastination” suggestion. My girlfriend has worked through the entire path on Duolingo Spanish. She can’t speak Spanish.