In 35mm one can carry a greater variety of lenses compared to larger formats. The same time the lenses typically have larger aperture. Which yields more use for lower speed films (ISO 40).
I agree that to get the maximum out of a high-resolution film you need a fixed camera. Though that does not necessarily mean the use of a tripod.
Furthermore with a speed of ISO 40 handheld photography is often possible. In this case one might lose the highest resolution, but still yield finest grain.