I think that there are many assumptions being made here. The biggest of which is that everyone is even interested in writing code. I know many people whose eyes glaze over the second I mention the word code, and would consider it akin to water boarding to learn code. I don't know that everyone is even wired to write code. Its certainly a certain type of person that can abstract problems logically and create good code from these abstractions.

I personally think computer literacy/competency is much more important than the ability to code. Unfortunately we still aren't to the point where we can say that most of the population is there.