I still don't think that's quite the right way to approach it regardless of if people think they can't draw, as you said the initial hurdle is having the courage to try and the fortitude to keep at it! I don't really understand how ignoring al the very basic rules under the pretence that they "Cant Draw" so instead go around the core fundamentals will teach anyone anything but, look for short cuts and things to make learning through practice "easier". IT may just be I dont fully grasp this concept, being Autistic, I struggle with some specific ways of thinking.
I mean if it works for people then, good on em.