[Yoda]

What is the answer when someone ask why should the right wrist stay level?

Because . . . when the Right Wrist Cocks, the Clubshaft leaves the Plane of the Right Forearm.

This is an out-of-line Power Package complication that mandates a dynamic, in-swing Compensation to correct the situation and arrive at the correct Impact alignments.

Which can be done, of course, and often is. Nevertheless, it is unnecessary and fraught with split-second timing requirements.