I think you are defining DOF for yourself as meaning a wide depth of field. Depth of field is a range, the amount of the pic that is in focus, it was be a wide DOF where everything is in focus, or it can be a narrow DOF, where nothing but that one teeny thing is in focus.
I think people just mean that whatever DOF was chosen (narrow or wide or inbetween) works well with the composition of the pic. Sometimes it enhances the pic to have it one way, sometimes the other, and when people comment on it, that means they think it especially works the way it does.