You'll either see subreddits add lots of mods, or culling them. For example, /r/ukpolitics has 22 probably-human mods [0] [0] https://www.reddit.com/r/ukpoliti

You'll either see subreddits add lots of mods, or culling them. For example, /r/ukpolitics has 22 probably-human mods [0] [0] https://www.reddit.com/r/ukpolitics/about/moderators https://www.reddit.com/r/ukpolitics/about/moderators