TL;DR, Feddit.UK is down, we're working on making a fun replacement!
A number of days ago, feddit.uk had kicked the bucket.
The community on there had noticed months ago that the owner was inactive. This was around September (Going off of memory). So they arranged to set up a new community run by the same feddit.uk admins (except the owner, the only one who had host access) which would replace it. However, on the weekend as Quackhouse was going to be launched, the owner responded to an email and made two users admins. Emperor and GreatAlbatross. However, they did not have access to the console, just lemmy adminship. Ever since, the owner has been AWOL. The community were too afraid to go back to setting up Quackhouse incase the owner showed up again.
Unfortunately, that wariness and being afraid led to the worst case scenario happening - Feddit.uk has dropped offline. We believe the instance has reached some form of file size cap. It was basically an aeroplane flying with dead pilots before then. And it appears that aeroplane has crashed.
If you are from the feddit.uk refugee base, please join the new community whenever it is ready. Do not sign up now. We are busy and still setting up and don't want an influx of new users just yet.
For now, sit tight. I'll update this post whenever it's up and running and ready for sign-ups. I am not posting the name for now so we don't get overrun with sign ups. But we would love to invite you back to our community when it's set up.
The new community will have it's own unique identity that doesn't have to piggyback off of Lemmy and Reddit for it's name. But it will still aim to be the main UK lemmy instance that feddit.uk was. By all means, it will be a full lemmy instance, still federated, etc. It should be the same experience as feddit.uk. But we actually do have fun plans to create a nice sense of identity with that instance if all goes well! I will warn you, it does have a silly name, but that was the name that was decided upon.
We look forward to having new members. All are welcome, whether or not you were from Feddit.UK or not. We will have the theme be a UK-based lemmy instance.
I'll try and remember to update this post when we are ready.
~20CX12

I believe the idea behind different servers not meshing but federating, so they can have different focuses and different moderation stances.
Not stuck. You can set up your own instance and be beholden to no-one other than your country's law
Sure you lose everything from the dying instance. Everything is temporary. I lost so much karma leaving Reddit, but it's all nothing, especially here where you can post and comment at any karma
If you're worried about losing your posts, back up better
This seems like a much better way, in many ways it would be more robust. There would be problems though... This would be even more vulnerable to EEE. Disputes/hostile action between servers could damage the whole website (I'm talking about maliciously hosting CSAM for example).
I doubt that if one server was hosting CSAM that law enforcement is going to be charitable with the rest of the site just because technically it was just one server. I'm admittedly not at all sure of the legal precedent here... But I suspect the site would be judged as a whole, if not by the law then certainly by the public.
Yeah, unless I own all my own data, the Fediverse doesn't really solve anything. Sure, I could host a server just for me, but if everyone did that would it even work? Or would it collapse under the load of all the data whizzing about behind the scenes?
Or just have a bus factor greater than one.