Probably, my intention has not been introduced to you properly.

Because this system is automated by a server program, a contributor can't change a file name directly. 
An access path to the file (such as the URL) is generated automatically from the title of the item and the account name.

As for my being afraid.....
Won't  un-consistency in system occur even if the title (It is not a file name.) of the free item is changed by post-editing?

I can't try personally because the influence of this is big.