I agree, but fur slightly different reasons. “Fed” and “verse” are both fairly loaded root words, “Fed” especially. It also sounds a bit arcane/technical/out there.

“Lemmy” and “Kbin” are both short, cute, and come without any baggage or expectations. It’s a lot easier to create an identity with a term that doesn’t have any existing associations, imho.

I think it makes a lot of sense for the technology to be called the Fediverse, since it’s descriptive once you understand it, but I think Lemmy and Kbin will have quicker uptake with new users. They’re better brands to advertise.