It’s essentially a decentralized Twitter-like system. There are multiple clients with varying degrees of good UI (textual and graphical).

I felt that the real problem is the same most new networks have: everyone is on other centralized networks

The other problem is discoverability is challenging. My experience trying to find people worth following was kind of meh: it seemed like it was (I’m still not sure if this is accurate) necessary to connect to Multiple different servers, to follow people who had chosen different servers as their main account.

Maybe it would be better with more usability? But fundamentally it has to compete with network effects of other platforms, and most users simply do not care about centralization: it’s not a selling point, it’s just a fact