In I9801a71be2, I proposed to change the interface message wm-license-cc-zero-explanation (which is used, for example, on Commons’ {{cc-zero}}) from “The person … has dedicated the work … by waiving all of his or her rights …” to “… all of their rights …”. This is more inclusive (“his or her” does not cover all contributors) and also shorter.
Since the previous text was an exact copy of the English CC0 deed (though our translations into other languages already differ from Creative Commons’ translations – compare our German with theirs), @Multichill thinks such a change should be approved by the legal team. Can somebody from WMF-Legal take a look?