I am not Jewish but it is obvious to me the IDF Chief Rabbi's statements to the students were in fact a rapid fire surgical destruction of the most common pseudo philosophical reasons given fit young men to use in self justifying evasion of proper military service in defence of their people. In essence, at the time, he was not talking to experienced troops, he was talking to inexperienced children, and he told them that not serving with their cousins in defence of the people is wrong. Critics should try reading the article again and think about the context and notions the Brig. Gen. raised.
High school teacher's union threatens strike (Haaretz)
from the article: IDF Chief Rabbi: Troops who show mercy to enemy will be 'damned'