Blood Defiler, Shade of the Green Dragon, Zorskaar, Kongar and Avatar of Amun are all World Bosses as stated in the release notes by the developers and will remain to be called as such regardless of definition or popular inclination.
Why even argue this point? By definition many things in Eldevin are incorrect, but this is a fantasy setting where the rules are set by numerous bright minds within Elgin.
Also if you do see something incorrect on the Eldevin Wiki please take the time to edit it or inform an admin. Those who do edit the Eldevin Wiki regularly obtain their information in-game or from official sources and if up-to-date information is corrupt that has been added to the Wiki by these editors, you'd best discuss it with the developers because by Eldevin's definition, it is correct.