I'd just like to interject for a moment. What you're refering to as Nostr, is in fact, NIPs/Nostr, or as I've recently taken to calling it, NIPs plus Nostr. Nostr is not a social media unto itself, but rather another free component of a fully functioning communication system made useful by the NIP event kinds, clients and the vital relay system comprising tamperproof events via schnorr signatures

Many users run a modified version of the NIP system every day, without realizing it. Through a peculiar turn of events, the version of NIPs which is widely used today is often called Nostr, and many of its users are not aware that it is basically the NIP system, developed by fiatjaf.

There really is a Nostr, and these people are using it, but it is just a part of the system they use. Nostr is the framework: the system that ensures events are usable and interoperable between clients/relays. Nostr is an essential part of decentralised social media, but useless by itself; it can only function in the context of a complete client-relay system. Nostr is normally used in combination with the NIP guidelines: the whole system is basically Nostr with NIPs added, or NIPs/Nostr. All the so-called Nostr distributions are really distributions of NIPs/Nostr!