— Because it's not an IDE. You can tune it to make it feel almost like an IDE, but it's not one
—
Yep, most people misunderstand this. Atom is not an IDE too, "a customizable modern code editor" at most. But you can customize it so much that most people think it's an IDE.
— What are you talking about?
— I just hear of that, if you want to start a war in a IT group ,you just say "xxx is the best langue/ide in the world"