I don't really agree with this logic. It can be applied to anything. For example Marketing is everything in life. How you create your personal brand, your compa

I don't really agree with this logic. It can be applied to anything. For example Marketing is everything in life. How you create your personal brand, your company brand, what is your target audience (even on dating, it's neccessary to know), your key metrics to understand how you are doing and what to improve. More seriously though, it would be beneficial for everyone to learn but should is a strong word. There are far more important things for everyone to learn and coding, while ranking high is not one of the top.