I don't think that the future is that everybody should know how to code, but that coding some specific tasks is made so simple that any trained professional on a certain domain can do it.
Not sure what that will look, but until then why don't we just let kids be kids?
An introductory high school class would be enough at ages 13 or 14 for example.
Obviously I am not suggesting to push kids into coding as the main thing they should do. But it should be included as a part of their daily playing thing. If they don't like it, fine, they can be kids and do whatever they want. Just like if kids don't want to play soccer or tennis or swimming. My idea is to at least introduce them to coding and let them familiar with the concept. Programming doesn't have to be writing tons of code. It could be just about creating logics for the machine (i.e. workflow)