PSA: Server admins, you can hide communities from the All feed using /api/v3/community/hide
PSA: Server admins, you can hide communities from the All feed using /api/v3/community/hide
You can do this with /api/v3/community/hide, or in the database by setting community.hidden. Unfortunately this is not available from lemmy-ui yet.
From a comment by nutomic: https://lemmy.ml/comment/16090216
Context: https://lemmy.ca/comment/13891923
Not sure if that feature was known to everyone, so sharing this as its own post.