You are actually supposed to have a pathway to promotion as this was outlined in the requirement for Wikis to have localised rules and a localised blocking policy which first came into force in 2021.
The below is from the Wiki Rules and Blocking Policy page which can be found locally here on CC:
“Communities must have a pathway to adminship where good faith users can be put forward and chosen by the community to become an admin, bureaucrat, moderator, or another position on the wiki. The method for this pathway needs to be explained on a page that is easy to find, such as the Rules pages, and the process for choosing a new admin, etc. should be easily understood. You should involve your community with creating the system, too”.