Actually something that is funny about ActivityPub is that there's "ActivityPub the spec", which I think is pretty solid for the most part, and "ActivityPub-as-deployed"
Many of the critiques I'm about to lay out we left holes in the spec for which I hoped would be filled with the right answers
One thing we have already discussed so, before I will say anything else, I will repeat: content addressing is really good, and I'd like to see it happen in ActivityPub, and it's *possible to do*, I even wrote a demo of it https://gitlab.com/spritely/golem/blob/master/README.org
Bluesky does the right thing here, AP should too