Themer
Chairman of Selectors
But really at just club level, it doesn't make any difference what you do with your wrist, because every batsmen has a technical deficiency, every bowler has an accuracy problem.
It most certainly does; they had a section in the last test match where they talked about how important having a flexible wrist was generating pace, keeping accuracy and allowing swing.
Seriously even club players need a smooth albeit uncomplicated flick of their wrist on delivery.