Board Thread:Support Requests - Getting Technical/@comment-61573-20191230045226/@comment-9605025-20200207222950

As Tupka217 already said, it will just prevent the creation of their user page. MediaWiki extension documentation is written assuming that each wiki stands completely on its own and that the reader is the server owner (or someone else with equivalent permissions). Since FANDOM has a global user database, local user registration restrictions do nothing.