@thefrankring Nostr is like ActivityPub, except your id is a cryptographic key instead of a domain name. That means you don't have to pick an "instance". Instead there are "relays" which anyone can run, and you can choose different ones to publish to at any time.
On fedi, either you have to run your own instance, or accept the fact that your instance provider can deplatform you for any reason at any time and you lose all your followers and content.