Comment by grishka

ActivityPub is "sufficiently decentralized" in my book. I don't consider decentralizing name registry a requirement — DNS is a sufficiently decentralized name registry we already have and know how to manage. I don't consider cryptographic keys a viable form of identity because they absolutely inevitably leak into the UX and hopelessly ruin all of it. To add to that, as someone who has worked in a real-world popular social media company, I can assure you that account recovery is not something "nice to have", but rather a hard requirement — and it's impossible, by design, in a public-key-crypto-based system.