That just describes any social network cold-start problem. If you want to solve that it needs to be really easy for regular users to join and contribute.

Example: Click "Join Nostr" on the nostr.com landing page and the first thing you see is "private" and "public" keys. Click next, you land on 4 example nostr clients. One is broken, the other one is filled with japanese content, the other one is a GitHub repository etc.

It's a cool project from a technical pov as the system is quite simple but you can not expect regular content to start popping up if the experience is only tailored towards motivated tech nerds.

I tried to improve that by making it easy to syndicate the content of Kirby (A blogging framework) to Nostr (https://github.com/dewey/kirby-posse/pull/9) but ran into many issues with how the various clients support and show images and lost interest along the way.