Jason Witten is, indeed, a rare commodity in the world of pro football. Fifteen years and still loving the game and literally everything it involves. Rico is extremely fortunate to have him available to mentor him. If he's anywhere near able to duplicate what JW does, he'll likely have it made.
Evidently, Rico realizes what a gold mine he has at his disposal, since he mentions JW and what he's learning from him at every turn. It's really a positive aspect of his ongoing development. Surely, the Cowboys should be enabled to prosper from Witten's presence long after he's gone.