I actually really enjoy this, it’s really cool to login each day and only see UK specific content in a similar style of the subreddits of old, and with most of the features of Reddit. Previously I had to have them with a multi reddit, but my home page was full of world wide content.
I like that due to federation I can still look at content from around the world but it’s not my default experience. Feels more personalised.
I think this is an unfounded concern, it’s similar but clearly different. Should that be wrong, the community can move to a new name/domain in good time but will remain as is and connected to the Fediverse.