[12 piece bucket]

Why do some players have more right arm bend into impact than others?

I tend to maintain the more bend more than I think anyone would prescribe from top of the swing, to delivery, then into impact.

What would cause this? What does this tend to do to the golf swing? Is this a problem with the motion of the shoulders?

I know it sounds simple, just straighten it earlier but I have found no mechanical way to make this happen.

Does it matter?

YES . . . Matters . . . could be you have too much axis tilt too early . . . if you don't release #4 and #1 you have to get to the ball some how . . . As a result you lower the club via tilting your shoulders . . . and likely moving your head back. Move can be a face opener and shift the plane right move.

Could be a result of the face or something . . . seems like I remember you having a shut face right? Could be you are trying to "get under the face" by tilting back to get loft thus your right arm doesn't straighten because you have disrupted the "radius" . . . put the swing up and lets have a look.