Those questions aren't there, when you sign up it's just like any other service. If you want to do the decentralized thing or wonder 'why do some people have specific domain handles and the like, the information is easy to get, but you could also use it without ever knowing any of that. So very low friction for non-technical users.

> And you know the answer to all those questions for bluesky?

Nope. Just pointing out the downfalls of decentralized, and the fact that compromising with some centralization (as Bluesky is doing) is a better way for most people.