Yes, we have editors there. None of them are paid. All are volunteer, and they may edit in other areas of the directory as well.
Even if there were no submissions, that wouldn't mean they couldn't go and find sites to list. Sometimes we find listable sites faster doing searches on the search engines that we do looking in our pile of submissions.
The fact that the directory isn't growing as quickly as you would like probably indicates that these editors are busy doing other things. It does not indicate abuse.