Code for people interested https://codeberg.org/rimu/pyfedi/src/branch/main/app/admin/routes.py#L373
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.
Or you could pull it in manually. It’s just that the automated startup would not do it for you, for communities with these keywords. Nothing prevents anyone from pulling in the communities manually though.