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On Reddit only the admins can shadowban, not the mods.

By admin, I assume you mean mods who have "full permissions" right? Some of the popular subreddits do have have a lot mods with such rights.

Im pretty sure only paid janitors aka "anti evil operations" can shadowban. Mods with full permissions are still just mods.

Admins are employees of the Reddit company. Moderators typically are not.