At WiktionaryZ, an admin is someone that we trust to edit. When this someone edits, it helps us that he is a sysop. It allows him to block and delete errors when this is needed.
For those of you who know the Wikimedia Foundation projects, how would one of their communities react when a "bureaucrat" starts promoting users.. and create some 20 new sysops in an hour .. I am sure that it would create an uproar. Not on WiktionaryZ I am happy to say.