It uses NFC, where the NFC tag carries a payload to tell the brick what to do. So in theory they can develop new skills for the brick and release new "trigger" blocks for it.

But to your point of: "seeing limitless possibilities in what you can build or pretend is one of the keystones of Lego", the first comment I saw on the instagram post about this was "but I like to make the pew pew noised myself".