wrote up a reply to @cwebber's "How decentralized is Bluesky really" blog post:
this was pretty long so I didn't get in to DID / DNS stuff.
contact lists are awesome and under-utilized, and petnames are part of that. but they don't make sense for big-world or discovery.
we like DNS. it is technically centralized but power/governance is pretty devolved.
we didn't pick DIDs because they have "decentralized" in the name, they are basically just an abstraction barrier to uncouple identity mechanisms.
PLC needs work, but is self-certifying and that keeps a lot of paths open.