User blog comment:Batran99/FallorAutumn 2016 Staff Polls/@comment-26031225-20160913193352/@comment-26031225-20160918163402

Well it is probably because the Content Moderator position was created recently (it didn't exist back in Spring 2016 Polls for example), basically this new position gives additional rights such as protecting pages but they can't block people (there's more info in this page; http://community.wikia.com/wiki/Help:User_rights#Content_Moderators)

Also this position is not very well-known because no one has such position yet, this is the first time people apply for it because it is new.