Onboarding is probably the biggest barrier for new users. Most people just don't care about the technical stuff that we all know makes nostr great. To them things like relays and dealing with keys are hassles they don't want to think about. Onboarding needs to be streamlined and idiot proofed.
Discussion
Not to mention, new users also need to learn about #Lightning, which is something that happens completely outside of #nostr.
and if they didn’t learn how to get a Lightning wallet, and learn the relatively difficult process of connecting it, then #nostr is just another social media app, that still doesn’t have enough interesting content.
As much as we want to believe that anti-censorship is what makes #nostr unique, it’s not. because 99.99% of people don’t experience that. Only high profile/ influential people are considered about this, and it’s even a subset of that group.
What makes nostr unique is the micro transaction. That is nostr selling point to a normal user.