Can Arnold's recommendation replace the traditional ordinary shoulder recommendation? Which is more effective?

All kinds of exercises can stimulate some parts. As for which method is better, it depends on the level of the practitioners. For the average exerciser, the exercise method is very good, but for the exercisers who practice deep and fine parts, the requirements are higher, so we will consider which method can stimulate some parts more. There is also that different people practice to a certain extent, and the methods of stimulating some parts deeper are not necessarily the same. Try it yourself and you'll feel it! Arnold's own method may be good, especially for himself, but not necessarily for everyone!