The actual title of the piece at the Poetry Foundation, “The Warmth of the Messy Page“, is better.
No matter what your approach, engaging in revision will help you see your work more clearly and help you discover more of what you meant and sometimes what you didn’t even know you meant. The word itself says so: re-vision. To see again, to see better. Getting back into work that felt complete may seem daunting—why mess it up again?—but always leads to deepening the poem itself and your own skill in the craft of writing. You will see your work newly each time you come back to it with the willingness to explore further possibilities. It can even be a lot of fun.