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.
Yes. Not really clear if it’s intended as a joke or malice. When the dev was called on it, he was just like, well you can read the source code so it’s okay. Which makes me think he knew he was going out of his way to be a dick.