When you run a manual backup of a large tree (File>Backup), including media, no dialog box shows the progress of the backup while it runs. I have a fairly fast computer, and it took long enough that I first thought the program froze. I also saw that it didn't even give me a "backup completed" dialog box when it was done.
If somebody has a older, slower system, with loads of large media files, a backup could take a while. It could get to the point that you wonder if the program crashed and locked up. That's where the confirmation, or progress is needed.