How will this end up going any better than Mastodon has? Near inevitabilities: - All the small instances defederating from the largest due to politics/spam/annoying noobs/whatever, effectively killing the easiest path to entry into the community - Pointless debates about whether it’s OK to federate with instances that host pirated content, disagreeable politics, furry VNs, etc., which everyone has to take a side (the…
Your account is hosted on a PDS and you sign into the app with your PDS sign-in and records go to your PDS, but everything on the app is from what's called an "AppView" which provides a centralized view of all data in all PDSes so it feels just like you're using a regular centralized app. But there can be multiple AppViews and AppViews can be self-hosted.
So unlike with Mastodon, it doesn't matter what PDS "instance" you're on because the app layer is completely separate from it.