search is the only thing that really scaled, and really mattered. more investment in that would have dramatically changed things for the better at Twitter. this is still the case.
the only thing the centralized internet (google, reddit, Facebook, twitter) solved was the discovery problem. solving that for decentralized protocols is a massive win for the free internet.
if there's one thing to focus on (for the social media use case) it's search. both for people, but more importantly, topics. Twitter won because of search. it wasn't a social network. it was an information network, and it excelled at real-time because of real-time search. that's a base requirement now.
what nostr adds, and what will make it sticky, is the multi-app/use-case ecosystem. but each use case is going to have different needs for attracting people to it. search is table stakes for the social media one. it won't matter how good the tutorial content is until this is done right.
nostr has the benefit right now of having a completely open and wild API. that matters as every other service is closing down. it's perfectly OK that we mostly have devs and bitcoin-obsessives at the moment. we have time to get all the kinks out and make something that's truly hard to replicate. where the only way to compete will be to join.