Aaron Hamburger offers a nice piece of advice for writers - don’t outline. At least don’t do it before you start writing. Just go ahead and start getting words on the page. That is the main struggle and BTW, it is always a struggle.
So is great writing just great typing? Well, no. The quality comes out in the editing. And part of that editing is to check out the structure of what you wrote - to outline it.
BTW, that reminds me of a story. Truman Capote quipped that Jack Kerouac’s writing style was “… not writing, but typing.” Ouch! It was a comment that people repeated and repeated. And it is fair … to a point. Kerouac’s stories don’t have a traditional structure. Instead, they are meant to look like a stream of consciousness. But this was window dressing, Kerouac edited his stuff like crazy. As did Joyce. They did it to intensify the experience from reading. To make it feel like the real thing. But not to impose order. Unstructured structure? Whatever, but not unplanned.