From what I understand, the golden rectangle (or mean) acts as a guide to proportion of physical form, so 3D buildings, rather than 2D paintings (or photos). Paintings rarely conform to the mean in canvass size, although they may more often be seen to conform in content, within the frame. To my eye, wide-screen TVs and computer monitors have given us a wide-screen view of things & I don't like it. It is wider than my natural way of looking at things and often causes my eye to wander around the frame looking for the subject or a landing point (people used to decry 135 format for being too wide and an un-natural letterbox view of the world. How things have changed in just 20-years).
So, walking through a square in ancient Rome or Greece, or looking up a mountain at an isolated monumental structure, the golden mean was supposed to be the most pleasing form. But to appreciate that, the form (or building) needed open space around it to breathe. Which they had in those days. But if you saw half a dozen golden mean photos hung side by side in a gallery these days, I'd mentally be cropping them to 6x6, 6x7 or at the most, 6x9 as those are the shapes which please my contemporary eye and can be filled with content, as opposed to simply filling a gallery wall. Like landscapes? Try a roll of 135 and see if you really need anymore width.