> instead of migrating the peer group over to a new platform every couple of years
> I appreciate and respect the technical efforts behind atproto, but yet I can‘t see that it solves the problem described above.
If I am correctly reading backwards from "does atproto solve this core problem I see" ...
ATProto is a fabric where your data lives and Bluesky is just one app that sits on top of this. Your network and data stays with you if you move platforms or try out completely different apps. Same account, same data, same social graph (if you want to reuse it for other apps or not). Similarly, other apps can access all or some of your data (if you let them), so you don't have to start from scratch and they can provide more interesting content for new to them users (but not new to atproto)
In this sense, as people try out and move around different apps, they don't lose things. Users can even be on different apps, but using the same underlying data, transparent to them. This is called the "credible exit" around the atmosphere (atproto ecosystem nickname) and means (1) you can leave a bad company without them preventing you from taking your data (2) enables real competition in social apps, re: the aforementioned features.
The kind of content that wins the Internet is never the kind that'll be "popular", despite all objective data, so whoever to run the platform has to "algorithm" the system to prefer "popular" contents which destroys the community as well as greater society in matters of decades.
We just needed an RSS with a local algorithm.