nostr:npub1sdkl2zyvnuc045tn453k2eyrg2ezkxu3qqnkgh3uejr8y8pd7duqpr0kgj "Mastodon does not need to grow to be successful" and "the tech is already good enough" are in no way the same thing.

The first is true.  The Fediverse is a success.  

The second is obviously false.