I should clarify. Yes, everything the club does is a result of what your hands make it do. But all that is tied to fundamentals that don't involve the use of hands and wrists during the downswing.
At his, and my, stage of development as players, the concern should be the basics. Grip, alignment, balance, a good turn, staying connected.
Attempting to correct a flaw caused by a breakdown in one of those fundamentals by manipulating the club during the downswing is not a good place to start. That's all I was getting at.