Board Thread:General Discussion/@comment-27043274-20170610234254/@comment-9605025-20170611005611

Wikia/Fandom does not guarantee freedom of expression.

I am a little confused about your situation. Typically, a contributor can delete their own contributions provided that it does not break an important component of the wiki. However, I am not aware of any policy which makes this mandatory. If admins decide it is appropriate, they can undelete content and/or protect it from being deleted, even against the contributor's requests.

The contributor in question does have the ability to file a complaint with Wikia/Fandom against you but whether or not you are removed is based on the outcome of their investigation. If the criticism really is non-offensive/constructive, chances are you have nothing to worry about. As a matter of fact, it takes quite a lot for Wikia/Fandom to side against local admins (something many new/anonymous users complain about). Note, however, that attempting to cover-up data that might incriminate you will only build the case against you.

As for what will happen on other sites such as deviantArt, that depends on the policies there.