A decentralized design is better than a wholly centralized one, definitely. The issue arises when it morphs into a cat and mouse game; ambivalent clients and/or relays starting to censor what they consider "undesired" users, others gradually becoming more restrictive, etc. Nostr client and relay maintainers seem hellbent on doing everything wrong with the fediverse, but on a far worse scale. The point isn't that you can't fuck off and use something else, but pondering how long until you'll no longer be able to do that. I didn't leave the fediverse just to end up with an experience worse than it.