Thread:Sannse/@comment-15745114-20200228004746/@comment-1038387-20200228163842

That feature was the Community Builder, and is now abandoned. It was an attempt to build wikis without the restrictions of MediaWiki, and was essentially just a WordPress site anyone could edit, but had no moderation tools like RecentChanges and Contributions. While it had some features that were interesting (especially data structure), overall it wasn't a success.

It's safe to say it's not going to be optional in the UCP.