Why are playlists Alphabetical instead of in folders?

When I look for a song from my playlists in djay for iphone, I’m confronted with 100 smart playlists, then 319 regular playlists, alphabetically.
So I use Itunes instead.

When I use DJay Pro, I find 17 folders, with lots of nestled sub folders. It’s much easier.

Why can’t djay for iphone show folders?