Good initiative, but I think that's probably a lot of no-context links to just dump on someone when they're new. It probably makes more sense to have a specific welcome message with one or two relevant links for each service, rather than a whole-fediverse linkdump that tries to cover everything in no particular order.
A new user on Lemmy doesn't need to know what ActivityPub is, they just need to know how to pick an instance and how to use lemmyverse.net. A new user on Mastodon doesn't need to know anything at all about Lemmy, they just need to know how to find people to follow. Etc etc.
The rest of the info is interesting, but it's not what's needed when people are new.