A counter-argument would be that you don't need to have good handwriting to be an effective writer, and you don't need to have good draftsmanship to be an effective artist. "If you can walk, you can dance. If you can talk, you can sing".

See the highly popular /u/Shitty_Watercolour on Reddit or "Get Your War On" comics by Rees, David.

Practicing technique can be nice, but it can also hinder spontaneity and creativity.

The magical inspiration in art is something beyond technique. The way you practice that is to just live your life.

Lots of people hold themselves back from drawing, dancing, and singing because they are afraid of being judged for not having enough technical skill.