jointhefediverse.net seems to be a commonly linked resource for directing people to join the Fediverse.
Curiously, it does not list Lemmy under the list of Reddit alternatives. Their GitHub README explains why.
Previous relevant discussion: https://lemmy.ml/post/78808
On what basis can anyone declare one instance to be the ‘main’ one? I’ve seen a number of people claim the same thing about .world, but none of them need to be considered the ‘main’ ones. The entire motivation for the creation of the fediverse is to allow segmentation… I think people simply want to make it an issue because without these little cross-community spats things get boring.
I agree that ideally the concept of “main instances” is beside the point in a federated network. Let’s call them “flagship” or “onboarding instances” then, the initial ones set up by developers as proof of concept that usually get the most traction by way of being open for registrations the longest.
I think it’s disingenuous to classify the decision to omit Lemmy from a list of fediverse software as “a spat”, though. Bringing it up again 1½ years later probably fits the bill better.