Board Thread:Support Requests - Community Management/@comment-5859184-20130206233413/@comment-23523342-20160101220737

Fandyllic wrote: You could also try to get Wikia to disable anonymous edits with Special:Contact. Odds aren't good, but the more admins and founders ask, the more Wikia will consider it as something content creators want.

Even Wikia knows it is bad to discourage content creators... not that they always do the right thing. I think you can disable anonymous edits when creating a wiki (I'm not 100% sure though...).