User blog:XScar/Story Arc Names

So I realized that we have listed on the Story Arcs page that "none of the names are canon." I know it's a fan favorite to call the current anime arc the "Yorknew City arc," (and it's what we currently use across the wikia) but in everything, it's called "The Phantom Troupe arc" -- in the list of arcs in the Treasure manga editions, in the 2011 anime boxsets, etc. Is there a reason why this shouldn't be considered to be official?