Originally Posted by effortless
If there is no definition/agreement of what wrist snap is, you can't argue whether it is or isn't a real phenomenon. You said that modern strokes have wrist action - why can't we call this "wrist snap"?. The cocked wrist position involved with wrist snap is not actually laid back, the muscles in the forearm are used for this to happen disregarding forward wrist action.
You may call it wrist snap if you want but the problem is that this terminology is misleading and sometimes detrimental . More often than not, it encourages the student to perform unwanted violent/exaggerated wrist actions -- too much forward flexion of the wrist. This is my objection to the terminology. 30+ years ago, I was instructed to snap the wrist for tennis serves and badminton overheads. It produced incorrect actions of the wrist. It took me quite a while to unlearn this. I've seen the same thing happen numerous other players.
If you are going to tell a student to "snap the wrist", you must demonstrate exactly what is meant by your instruction. You must also keep a watchful eye that the student's wrist does not end up with an extreme flexion caused by a violent action of the wrist. Such an action can be detrimental to the wrist and forearm.
Not sure what you mean by your very last statement (bolded). Are you referring to supination (the opposite rotation to pronation).