You have similar concerns with node (What's npm? etc...) These are peripheral and necessary knowledge on both platforms.
> Getting from zero to JSON api in node.js is fast by comparison
It's only fast because you already have the knowledge.
Two equally proficient developers in Java and node will set up and get a server up and running in about the same amount of time.
The idea that it's a faster to achieve in a dynamically typed language is a myth.