Board Thread:Support Requests - Designing Your Wiki/@comment-36811628-20190212085909/@comment-168424-20190212165809

Well, fandom.com hasn't been forced on all wikis yet.

The Help:Forum page says at the top:
 * Wikis created after November 2016 cannot have Forum enabled.
 * Wikis that already have Discussions enabled cannot switch to Forum.

...not that anyone reads the help pages.