Metaphor is that in rowing the rowers face backwards they don't see where the boat is going. So you need at least single person to look forwards. And to steer you have to command rowers. It is a valid role to have in large row boat. But you only need one of them.

> Why is there still a single captain

Because he beat up all the other captains.

> why isnt he rowing

Because he’s the Captain and he doesn’t want to.

> why are we rowing, and where are we rowing to?

The Captain knows. Don’t you trust the Captain?