It strikes me that the person who wrote that is used to associating with technical people, and might spend a little more time in the real world. I work in a company of 100 ish people, 15 are delivery drivers. 40 odd are sales assistants that customers value for their detailed product knowledge. 4 are involved in cleaning of different kinds. None of those people will ever learn to code, or need to learn to code, or frankly be capable of learning to code