@Sepix when you look at a profile, and it just says “@username”, that’s an account pixelfed.de. when it says “@username@some.host” thats a profile of a remote user (on some.host).
yes, delete actions get federated, meaning pixelfed.de gets notified when you delete stuff on chaos.social. they don’t always get transmitted in time, so it can take a while for a post to be deleted everywhere, or if the message gets lost, your post stays on remote instances.
@Hylactor bit of load issues ATM, but pixelfed.de has insta imports enabled.