The point has always been the act of writing itself. What you write about is almost irrelevant; it’s that you spent the time writing, that you had ideas in your head, and that you squeezed them onto the page.
I think your point stands for upper level work; however, at medium to lower levels, your counterfactual starts to weaken. The ideas have always been there, but it's the ability to express them--well enough to notice their presence--that is not.