There are configuration files for dnf in /etc/dnf/protected.d that might have gnome-shell listed. Check that directory for a file called gnome-shell.conf. If there is, you can simply rm it and try removing gnome-shell again.
Be aware that there might be packages you have installed that depend on gnome-shell, so be sure to double check the list of dependent packages that will also be removed.
I think from the perspective of beehaw, it’s more relieving rather than spooky. There’s nothing stopping someone from hopping over here to lemmy.world to make an account. It’s just that comments and posts from here don’t get copied over to beehaw, so it makes it less work to curate and moderate what’s showing up for beehaw-specific accounts.
Any new content. We can still see and interact with the posts that were created and copied from when beehaw was federated with lemmy.world. Once they defederated, their server simply stopped interacted with lemmy.world.
Any posts you see from beehaw are just copies. You can still comment and vote, but the changes are only kept on lemmy.world’s instance.
Since lemmy.world is still allowing federation with beehaw, lemmy.world users can still see posts and comments from beehaw users, if those beehaw users were to post to the lemmy.world instance directly. The beehaw users wouldn’t see any interactions or replies, however.
It’s a street with a lane blocked off right now. Lemmy.world allows traffic from beehaw, but beehaw blocked traffic from lemmy.world. We can hear them and see them, but they can’t hear or see us.
There are some decent spinoffs, at least!