Thread:Mrkermit/@comment-3406131-20160316165204/@comment-10473115-20160316175829

Category will be hidden when magic word " __HIDDENCAT__ " is added to the category page. It will automatically put that category to Category:Hidden categories.

I think that all maintenance, cleanup, something needed and other categories, which are not part of the content of the article, should be hidden. Categories listed at the bottom of the page are supposed to help the reader to navigate. Editors who are actively fixing those, can make hidden categories visible at Help:Preferences.