Yes that would have been a good idea. Because the man may cause another similar incident. As I said, one cannot really blame the dogs. We don't know how much encouragement he gives them. Dogs will often do all sorts of things if they are constantly re-inforced in that behaviour by their caretaker.
I can understand the person who filmed not wanting to intervene if they had a solid reason to believe the man would set the dogs on them.
I can understand the person who filmed not wanting to intervene if they had a solid reason to believe the man would set the dogs on them.