Some customers like this, others don’t. If you want to extract all the photo or video files from the subfolders, here’s how to do so:
On Windows: The absolute easiest way is to enter the common root folder and do a search for all files (i.e. search for *). When all files are found, mark all files, press Ctrl + X and navigate to the common root folder again. Now press Ctrl + V to paste all the files into the root folder. When finished, delete all subdirectories.