We could debate this until our fingers go numb.
How do you think we improved our writing back in the day before finding Althanas? We actually did the writing, collaborated with other writers (preferably more talented), and read the stories of others. Albeit, the improvement was extremely slow, but still there. Even if little by little.
I agree fully the detailed feedback and the unique rubric helps immensely with writing improvement. I don't deny that.
Althanas hit me like a brick at first, when receiving detailed and honest feedback. I found out, in the years before, I did only learn little. But, I can't say those years before taught me nothing at all.