I don't think the map is very useful for that purpose (getting a list of dozens of instances). It looks neat though. Presumably the data could be presented in a more useful way, like a list or matrix.
I truly do not understand that data display format, I would much rather it was in a list based from one hub instance and I could see links to that, and not to everyone. I honestly do not care what Lemmy.ml and Lemmy.world and Lemmy.one think of each other when I am looking for what they think of Lemmygrad