There are more things in heaven and earth, Horatio, than are dreamt of in your philosophy.
Fred Hatfield says he doesn't understand cross training at all. He was always a litmus test for me. That said...
Depending on the world you live in, doing that exercise the way they are doing it may or may not have meaning. All of that cross training stuff seems like something some branches, or communities within branches, of the military would see as worthwhile. But... I do not understand cross training methods or goals enough.
I would just caution against condemning without understanding enough to do so. For me, at least, it is enough that it the exercise is not known as an optimal one for bodybuilder or strength training.
.
