Board Thread:Support Requests - Community Management/@comment-45899239-20200904214912/@comment-168424-20200904230036

Hmmmm... I think you can disable Discussions, since both Message Wall and Comments are optional, but you would have to turn those off too.

However, maybe if you have enabled Discussions, you can't disable it? I know there are a bunch of wikis without Discussions, but maybe the rules changed going forward.