Purpose of the folder view

[jellyfin]

I added a "folder view" to my Jellyfin server, but basically it seems to be just again the same what I see without this folder view.
Maybe I did something wrong?

For example:

The library "MOVIES" shows exactly the same as what I see below "MOVIES" when I first enter "Folders".

But something be different, or?

I also don't see the name of sub folders, something I would have expected below "Folders".

Did I misunderstand, or misconfigured?

Many thanks!