Your whining

What does this animation feature do? Apparently, the feature isn’t supported.  Why show files if they won’t work?

Animated wallpaper feature require, well animated wallpaper to be installed. It does not work with single image files etc because single image is not animation. It also does not work with videos etc because it’s not video player. Animated wallpaper is a package which contains animation frames and information about playback.

You really should read the user manual. Oh wait you said you don’t read those. Well then it’s your own fucking problem if you don’t lnow how to use animated wallpapers. If you don’t read manuals, it’s not Nokia’s fault.