I remember a student asking a similar question a while ago.

This was Uncomfortable answer to that question:

"Everything Drawabox teaches is at its core an exercise, and each exercise addresses an underlying concept or skill, developing it in the student. Applying the ghosting method, for example, teaches students to think and plan before they make a mark. Drawing from the shoulder teaches us to use our whole arm, for the situations where it is ultimately necessary to make the kind of mark we're wish to produce. Construction teaches us to think in 3D space, considering how the marks and forms we draw exist in three dimensions, rather than just as lines on a flat page.

How you draw on your own, and how any artist ultimately draws can only be considered correct or incorrect against the kinds of marks they're intending to draw. We refer to linework as chicken-scratch not just because it is made up of a lot of shorter segments, but because it is something a beginner will do precisely because they feel that they are incapable of drawing with a single smooth continuous stroke. If an artist is capable of doing it both ways, and chooses one, then there's nothing incorrect about it.

Drawabox ultimately forces you to learn how to do all the hard stuff, so you're able to draw with the freedom of choosing, rather than the restrictions of inability."

I think yes, absolutely. Scratching is a tool that can be used right or wrong, it can help you feel the drawing, consumes less energy and messiness can even be aesthetically pleasing. The problem is that anyone can scratch by default but it takes confidence and practice to make a smooth clear line, and there are lots of situations where you need that skill. So the real problem is the habit of scratching, of making marks without thinking about what you want to achieve and the lack of confidence to commit to a single line.