So few devs on Nostr wants to hear that most people aren't interested in bitcoin, and that quite a lot of people are actively hostile to it. I'd go further than just accepting fiat, the prominence visibility of zaps in in every nostr client, and indeed on every post is going to turn a lot of people off. Bitcoiners don't want to hear it but they need to because a social media platform that can become a digital commons for all must not alienate the majority who want nothing to do with bitcoin.