I think Jeff’s general point, from what i’ve gathered from videos, is that you have chosen your curriculum, and that rarely happens with other, more classical, instruments.
But in the same way as the best way of learning medicine to a professional standard is to be taught medicine by a professional teacher, the same is true of music, separating the mechanics from the art. That’s not to say that amazing musicians don’t exist outside of that (i’d be interested to know Jeff’s thoughts on someone like Jacob Collier, famously an autodidact), obviously they do, but simply put, the best and most effective way to learn music (which is different from performing music), is to be taught it as a completely subject, not pick and choose what we think we want to learn.
Si