Why node.js tutorials are all about typing stuff on console as if this is the real world example?!?!??!

How do you mean? Like, running brew/NPM/yarn commands etc? It's just the way it's done - it makes it easier to get all your dependancies installed as well as saving your work onto GitHub or pushing code up to a server etc.

Stick with it, you'll get used to it and be loving it before long.