In the early days of tw and many other social media there was no incentive to join, until there was.

Are you serious .. I joined twitter in 2007 .. it was such a novel thing .. and then using texting as a tweet was even more exciting cuz not many had smart phone .. what is new in nostr from user excitement standpoint ? .... it is a great protocol but all the clients are slam dunk of existing interfaces .. unless we discover something new from user experience standpoint , nostr is just a backend ... That said , I am hopeful ..cuz upuntill now the protocol was a paradigm shift even for devs .. I am sure they will discover a cool interface .. new devices .. new processes .. gamechanger is still not here !