I think a few posts went on to eventually answer factually what we love about trackpoint - keeping hands on home row, preciseness, speed, high skill ceiling, etc.

But I also think the keyboard shortcut analogy, while indeed not talking about TrackPoint itself, is actually the most useful post for the goal of understanding it: One may never agree about usefulness of TrackPoint, but that analogy helps with understanding that "There's a small minority of power users for whom this is a force multiplier and who feel very strongly about the optimization it allows them" :)