Some good points. I would add this. The laid back position is almost always maintained well after contact. The exact degree differs, again with the ball. So it's critical in most forehands.
It's fine and good to point out how pros achieve this at the start of the "flip" in the forward swing and how it may or may not change moving to and through contact. And if Brian Gordon is correct, there is an incremental addition in force and racket speed letting this happen naturally as a result of forces in the forward swing.
My experience with hundreds of players is that often focusing on the laid back wrist--where it starts and how it stays through the critical part of the swing is far more important than the additional "turbo charge" from the pro motion. It's like an ice cream sunday--the whipped cream and the cherry may add, but without the ice cream you don't have a sunday...