A good question about this is "why this and not Fedi"

Fedi is fine.

However, it is HEAVYWEIGHT infrastructure.

It's big. It's not cheap to run. Even Misskey/Sharkey/Pleroma/etc. are not cheap to run.

mastodon.social is the default instance. There is no real way around that. People want a default instance.

It is not super seamless to move instances, migration is better than it used to be but far from perfect. It means bringing all your data with you to a new server.

With this... there is no migration, ever again.

With a backend like OrbitDB, you have a distributed storage network that is basically a cockroach.

There will be no "RIP <instance>" it will just be "RIP <home page gateway>". And you can run one yourself or use someone else's. My goal is you can run this on GitHub pages or any static site.