It's understandable since it was designed to be a scripting language, easy to pick up and be productive with only a superficial understanding. You have to get

It's understandable since it was designed to be a scripting language, easy to pick up and be productive with only a superficial understanding. You have to get your mind oriented to concepts like closures and prototypes - there's a natural barrier there between the js dev and the real expert. People can get jobs without making the leap. I would think they can keep their job. But at some point having only the superficial understanding will have to be compensated for, maybe in technical debt.