They probably have good discovery and trending post mechanisms. Mastodon makes it a point not to have one, which results in a wholly uninteresting feed for the average user. I’m only on mastodon, but I very rarely use it, because it mostly sucks unless you spend several, several hours trying to track down fun accounts to follow yourself.
It’s a track by RJD2 called A Beautiful Mine. It wasn’t written for the show, so I don’t think it really specifically represents anything about the show. I’m sure you could draw conclusions about what it could represent, but there’s no real correct answer to this question.