DMs are a mess but we don’t have broad support for DMs. We have dedicated apps for messaging. Not sure what’s wrong with relay management? Which client is giving you issues? Relay discovery won’t help because content is not that much different on them. Not sure what you mean by infinite scroll fails? Maybe expand on that? Same with muting? My muting works well? It’s not always cross client compatible but other platforms don’t even have multiple clients.

What are you talking about? Doesn't this stuff hugely depend on the client? It's not that "Nostr doesn't have great ux" because Nostr is just a protocol. It's particular clients that do or do not suck in various aspects.