Agree that Nostr is a natural fit for bitcoiners and it offers a lot of benefits to us. However, given the "unique sales proposition" of Nostr is that it's a social network without corporate or government oversight or control, it will ultimately appeal to anyone who values such fundamentals.
It may not be for "normies", but there is a large enough global base of potential users to make Nostr significant. Not only that, but the "Twitter-like" experience we see how is just one dimension of what is possible using the Nostr protocol.