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.
The piefed.world instance has some of these edited out but I don’t think they all are.
I think the communities were added manually
How do you manually add communities?
You go to
https://INSTANCE_DOMAIN/c/COMMUNITY_NAME@COMMUNITY_DOMAINand press JoinYou just try to go to the community from that instance, and it’ll say “community not found” and you just click it. Then someone local needs to subscribe to it for new content from there to federate.