Arguably, with the increase in literacy, Jevon's paradox would say we need to hire more writers. Indeed, a lot more people DO write for their job.
But its not like we went from a handful of professional, full-time scribes, to 10x professional full-time scribes. Instead, the value of being just a scribe has gone down (unless you're phenomenal at it). It stops being a specialized skill unto itself. It's just a part of a lot of people's jobs, alongside other skills, like knowing how to do basic arithmetic.
Coding, like writing, becomes a part of everyone's job. Not a specialization unto itself. We will have more coders, but since everyone is a coder, very few are a captial C "Coder".