to be honest with you, it's a little bit of both. the Fediverse - where i have lived since 2017 - is a nice place but it's also a bit anti-commercial and it's harder to code stuff for it. Nostr is more money-positive and easier to code for.
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Fediverse people come off a little deranged to me .
i find Fediverse people rather hard to put in a box. they're all over the place. you've got the geeks who like the tech, the LGBT people who fled Twitter, woke activists, legit hammer-and-sickle communists, and also people who aren't quite so easy to label, such as the people from noagendasocial.com.
in all fairness, i could call Nostr "just coinbros" if i wanted to stereotype it, but really, what i personally see are two crowds who actually have a lot in common. they're just coming from different places.
That's not a dig at you , that's just my experience so far.