The one thing I learned from scouring Reddit about photography is that the grid on a camera is used to align object in a more interesting way. For example, the object you are trying to focus looks more interesting when it is aligned on the crosses between 2 lines of the grid (either at the top left, top right, bottom left or bottom right). This makes the whole photograph more interesting than centering your object. Of course sometime center is better but when I couldn't find a good symmetry, I always go with the grid golden rule. :)

Yes, wider shots can benefit from "vastness" and focus object centered though.

Was just reading up and the article is not available anymore :(