Well, it’s meant as an introductory paragraph. I think such a general paragraph should not go to those lengths since the vast majority won’t be facing that issue. Most large instances that you would recommend for first timers are federated well enough that at least the civilised part of Lemmy is very accessible. I think that with:

• sensible defaults/suggestions
• easy to understand intro
• a help/link to a detailed article

you cover enough for users who can’t be bothered, who want to be informed, and those who want to understand what’s going on behind the scenes.