Sankaku Channel/Tag Alias: wallpaper ->

Aliasing wallpaper -> [[]].

Reason: very vague

Nothing wrong with this tag if applied strictly to images intended as wallpaper or in common wallpaper resolutions. Other usage is incorrect.

I vote remove wallpaper all images can have that tag

The tag is intended to cover images which are specifically designed as wallpaper. It seems valid.

yea they should do that there are other tags that were removed that were not that vague

You have already been advised about this.