People understand the idea of a "Client/Server" relationship intuitively, even if they don't know what HTTP is: "this website is the server, and I am the client. I ask it for info, and it gives it to me."
Fediverse asks its users to extend that knowledge with the "Server/Server" relationship that underpins ActivityPub, kbin, Lemmy, Mastodon, etc. It's a new, unfamiliar relationship without a clear real world analogy, so that begs lots of questions, and the instinct is to be helpful and welcoming and answer those questions. These are good intentions mind you! But it's complicated, and that will limit adoption as users self-select and find something else "more their speed."
I'm optimistic though. The Client/Server relationship of the internet was once new and unfamiliar to users. I think with time (maybe a lot of time, maybe not) people will figure it out.