Sure. I was trying to point out why people might take issue with your comment. CC0 appears in the headline and URL, and one of the early paragraphs of the link says this:
But we’ve heard from our community that we’re missing two important designations: Public Domain and Creative Commons 0 (CC0). Many members of our community want to be able to upload images that are no longer protected by copyright and correctly tag them as being in the Public Domain, or they want to release their copyright entirely under CC0.
So it was odd for you to not mention CC0 at all in your comment.
(I've edited the last paragraph in an attempt to be less abrasive)
But we’ve heard from our community that we’re missing two important designations: Public Domain and Creative Commons 0 (CC0). Many members of our community want to be able to upload images that are no longer protected by copyright and correctly tag them as being in the Public Domain, or they want to release their copyright entirely under CC0.
So it was odd for you to not mention CC0 at all in your comment.
(I've edited the last paragraph in an attempt to be less abrasive)