Grrr... At least with normal 'theory vs practice' quotes they stick to one (slightly broken) definition of theory in which 'theory' is (evidently) limited to oversimplified theories that don't fully account for specific details of practical execution. In this quote it conflates an encompassing definition of theory with the limited, specific caricature of the more typical theory/practice dichotomy presentations. Which is just all sorts of wrong.

Stick to your colloquialisms Yogi Berra! Don't get stuck half way to technical clarity. It's just an insult to all sides!