You must mean REPL, not notebook. I've been following the community since before the move to Discourse, and "use the REPL" surely outnumbers "use a notebook" by orders of magnitude.
Here on HN (in threads about Julia) the focus was generally on notebooks as I remember it. That's the context I assumed, but if it's about Julia fora in general I agree, the REPL had/has been talked about much more often than notebooks.