Okay, so many thoughts. I'm not even done, but already I love this.
I 100% agree with the point that we shouldn't recommend "the fediverse" to people, but should focus on the actual places (ie websites) that just happen to use ActivityPub. It's like in the phpBB days -- you didn't get regular people to join your communities by pitching them on "open-source php" but on cool websites they could join.