One issue that graphical user interfaces often suffer from is a lack of scalability. Whilst a GUI can make a single operation trivial - think renaming a file in Windows Explorer, for example - it can, at the same time, make a larger number of operations excruciatingly painful - say, renaming a thousand files using Windows Explorer.
At least in your file manager, you can perform more basic operations on a number of files: think deleting them, for example. Imagine if you were forced to delete files one-by-one, selecting each one individually, waiting for a small delay, then moving your mouse over a menu item, and selecting 'delete'. Also imagine that it's very easy to accidentally copy an entire set of files that then need to be deleted.
Yes, RedDot enables you to get into this situation very easily. Thousands of unwanted 'pages', thousands of individual operations to get rid of them. A more powerful command-line interface, or even a more sensible GUI, could prevent this situation from arising but, unfortunately, neither appears to be offered as part of the package. Oh well, I guess that's the price of keeping things 'simple'.