I don't tend to believe in cryptokey-first protocols like Nostr, where your identity is tightly coupled to a keypair. Human identity doesn't work like that at all, and keypairs as the basis of identity will never be suitable for use by the masses.

Human-readable names are far more suitable as a handle for identity as humans think of it. And DNS names are an okay-ish implementation of that.

I think that a decentralized protocol that provides name portability based on the DNS is a far better protocol than one that relies on keypairs.

AT being backed by VC is false—it's Bluesky the company that is. AT is merely a spec for signing, storing and propagating structured data (records) + the identity that owns said records.