It's still operating for now, right? Because if I look at random government pages in a browser that profile that doesn't block the social media widgets I can see links to facebook, twitter, instagram, whatsapp, youtube, and threema. There seems to be no mention anywhere that a mastodon server exists.
They're complaining about the low number of users. Did they bother to tell people that it exists?
Well that would explain why I didn't have it installed (although I did have other parts of cups until jwz coincidentally reminded us two days ago that it can all be removed if you don't have a printer.) I clear out anything that opens ports I don't need to be open. A practice I would recommend to anyone.