A counterpoint to my earlier point is that Swan and Saylor are playing a game that doesn't benefit from involving existing bitcoiners, so it isn't vital to their strategy to spend any energy maintaining a presence here.

Swan's goal is to onboard new bitcoiners. New bitcoiners are arguably not on Nostr, so why put in the effort?

Saylor's goal is to accumulate as much Bitcoin as possible and store in a way that persists for thousands of years. Once again, that doesn't have much to do with hanging out with plebs on Nostr.

Even though they'll probably come here eventually, expecting them now is high time preference behavior.