I agree to the extent that creativity cannot be tempered & time-boxed like most tasks.
However, I also think disorganisation significantly handicaps you.
There’s so much reliable, scientific evidence around effective ways to stimulate creativity & optimise productivity that it it, in a sense, lazy or avoidance to not become more organised & optimise how you use your time.
I also fear your line of thinking is just going to be used as an excuse by others to not become organised & create a disciplined approach to goal attainment.
You don’t need to train to run a marathon, but it’s going to make it much easier. And you’ll beat more people.