The biggest icons in that UI are 'Move To...' and 'Copy To...'. Casual users do not want to think about raw files, let alone how to move them around the filesy

The biggest icons in that UI are 'Move To...' and 'Copy To...'. Casual users do not want to think about raw files, let alone how to move them around the filesystem. That is why all modern operating system don't expose these concepts. You don't fix this kind of problem by making the buttons bigger.