A really insightful talk from Christine Lemmer-Webber, who has worked on ActivityPub and currently does work with Guile (programming language) in the Spritely Institute, among many other things.
She talks about fediverse, Bluesky, policies that threaten decentralization, a bit of history, age verification, and more.
EDIT:
The Fediverse link to the talk: https://video.fedihost.co/w/9NBHRAvZA5f9XTJHvcocVS