You know, humans have a lot of built-in reactions that are very hard to resist in the face of certain stimuli. It's hard enough to get people to talk peaceably in an online forum where we aren't smelling pheromones, feeling an adrenaline rush in reaction to physical threats to our well being, etc. It's vastly harder to stay calm and behave "competently" in the face of that sort of thing.
My ex was career military. One day, I was seriously set off by something and he accidentally got up in my physical space and bumped into me and his military training apparently had prepared him for how to de-escalate in the face of imminent physical violence because I was quite ready to hit him over it. The end result was that I left the house to go cool off elsewhere.
So I've experienced first-hand physical de-escalation tactics and my ex was one of the calmest people I have ever known. I'm the only person he ever raised his voice at (when we were fighting). Most people were incapable of getting a rise out of him.
So I think I have a pretty fair idea of just what it takes to actually de-escalate physical violence when faced with imminent physical violence and most people have neither the temperament nor the training. He had been in the military quite a few years at that point.
I don't intend to argue this further. I've said what I wanted to say. I was surprised my initial comment got any upvotes at all instead of being just stomped into the ground, given the current climate out in the world.