/r/StarTrek founder and primary steward from 2008-2021
Currently on the board of directors for StarTrek.website
The primary purpose of the defederation mechanism is not to block content from readers, it’s to prevent brigades. A big problem on Reddit is vote manipulation (not to mention shit stirrers showing up uninvited). On Reddit some mods would just ban everyone who ever posted in a subreddit (like T_D), defederation is essentially the same thing.
This is just the domain name, not the instance itself. If the instance is offline the moderator accounts will be inaccessible even if the domain name is sold.