Just a response on podcast index thing: yes its centralized but its not required to upload to rss. Its the one everyone references but the difference is its become centralized naturally as opposed to intentionally. Anyone can create an alternative index as RSS sits independent of that (though there is a network effects to consider in reality). The data is decentralized its only the reference library everyone happens to use is centralized. The key here is that the data is still self-hosted by the individual content creator. Podcast index can remove the reference to your data (like any relay can) but that doesn't rug your content, just the distribution via their library. No diff than if a relay chose to delete your notes or however its being stored. I guess there's blossom, but you can host your RSS feed in the same way too so there's no diff in that sense.