(imo)

New user experience isn't as big a deal as content, UX is an obvious hurdle tho. But bluesky is a bit fiddly and a bit buggy and still people join and stay. Discord is a flipping nightmare to work out too, just as another example. (These are both bigger brands tho, most people haven't even heard of nostr, that is obviously another factor).

But it seems like the content is the main problem, and I'm not sure there is a way around this unless a community (/communities) decides to make a home here, communities around an interest outside of bitcoin that is.

You see the complaints quite often about content being bitcoin-only or 99% bitcoin. 

I would be curious to see what a feed would look like if you filtered out all bitcoin and bitcoin-related words (stack, sats, hodl etc etc). It might look quite bare. Not sure most people browsing will stay for 400 people saying 'stack sats and stay humble' everyday.

In short, nostr needs 'normies' ¯⁠\⁠_⁠(⁠ツ⁠)⁠_⁠/⁠¯ lol