Code for people interested app/admin/routes.py#L373 (removed since posting), app/cli.py#L1026

I commented it out, rebuild the Docker containers and it works now 👍

EDIT: People seem to misunderstand what it does. It prevents it from federating automatically when populating the community search, importing from another instance or from Lemmyverse. It’s not a full block, and you can still add it manually. Not only that, but it’s also already partially removed since I posted this.