you have no clue what you're talking about. the old instance lemmynsfw.com is just essentially being turned read only. that's it. if you haven't had an account there it doesn't even affect you.

changes in dns can sometimes take a while until they're visible to everyone due to caching

this also means settings exports (with subscriptions) can be done, as well as notes in profiles about new accounts for those who want that. the settings exports can be imported in piefed as well.