There will be always some kind of gateway to connect different sources... IRC is still a thing :), so only time could tell, it is fun to watch.

If what you want is social media, then ActivityPub [0] is what you should use. But social media is a dead-end, technologically and socially. On the other hand, Nostr stands a chance of revolutionizing how the internet is used, and to help humanity escape the confines of social media.

[0] Mastodon is an implementation of ActivityPub, which is a social media protocol.

нет...