[CuriouslyC]

I've known literally dozens of published writers and I can tell you that the reason that pro writers say that putting the words down on paper is not the hard part is because they've trained themselves to mostly vomit on the page, then edit it to where it needs to be. Writers that try to write good prose out of the gate get blocked, almost always. It's a basic piece of tradecraft that people who write for a living all know.

The process is outline, trash draft (who gives a shit who does this) then refine until you can't bear to read your work anymore and neither you or anyone you share the work with has critical points that don't have very solid counter arguments. Most wannabe writers have notebooks of worldbuilding and story arcs but can't even get the trash draft done.