Amazing post talking about all of this, overall Hive is a pretty bad name as it has so many different higher ranking topics that cover this even when just googling "hive".

But for the reason behind it, I can really only think of Hivemind, as we are all crypto people that ultimately have the same goal in mind and work as one. We keep the community clear of scammers, meta-gamers trying to abuse the system, and we all work to invest for passive income.

But I do not think that is a good reason as it doesn't even come close to beating the searches above us. And that is only my opinion and reasoning, it is unknown to me why it was named what it is.