Daas Yochid To your first point-Maybe, but it is kind of a stretch to compare that to what he is defending from.
To your second point. It is not nekama when you attempt to prevent further attacks. In addition, I’m not saying that is his argument. I’m just responding to your question as to why what he is doing is better. You are confusing the argument with the subconscious drive to make the argument.
As to your last point; you may be right, I don’t know. However, you didn’t either answer “neither”- You chose to attack him for attacking those who attack him.