Everyone learns to write in school. A waiting job most can pick up but not all. I couldn't get past serving training. Carrying four plates and keeping them straight takes without spilling is for others.
Everyone learns to carry plates while growing up. There's a lot more to being a good waiter than just writing down orders and carrying plates. And there's a lot more to being a good writer than just knowing how to write sentences.
I'm essentially a professional writer at this point. Certainly I learned a lot from technical courses in school and working professionally in technical roles but, at this point, a lot was writing for newspapers and other publications.
This is like saying everyone learns math in school. It's technically correct, but only if you ignore the vast difference in skill between the average person and (e.g.) an accomplished novelist.
