After some thought, I decided that I'm not going to upload the recording to PeerTube. You aren't missing out on anything, since the talk is just a strictly worse version of the blog post above. That said, the talk itself was pretty good, but I'm just much better at explaining things through writing rather than talking. Also I typoed while live coding, so the demo didn't even work, and I didn't find the bug until way after the talk finished.

tl;dr read https://a.exozy.me/posts/activitypub-eats-your-brain/ instead