The importance of this is not to be underestimated. It is my understanding that counselors of people who've been violently assaulted tend to find that the people who put up determined resistance, even when they lose the fight, are sexually assaulted, are robbed, et al. do better mentally afterward than the ones who follow the "just submit, don't make them angry" advice. There's nothing inherently wrong with running or avoiding, if prudent, but when that's not possible or not the best option, being prepared is best.
The late Col. Cooper once replied to an interviewer asking him "but doesn't violence just beget violence" with something along the lines of, "Madam, I am committed to ensuring that it does. If someone wishes to commit violence against me or my family, it is my intention to see that he receives more violence in return than he can possibly enjoy."
Same - in the Cold War period, the looming fear of the Soviets was very real. Our basic close combat training had basically no continuum of force back then. It was all geared toward killing the anti-American effectively and quickly. The system that followed did better with the needs of more varied and nuanced situations as those became the norm. Being able to switch the mindset is crucial either way. I can still remember the exhortations of one of our DIs on the bayonet range to this day...
If Larry's getting this mindset training in Krav Maga, then more power to him. "Size of the fight in the dog," and all that. The dynamics of interpersonal, non-consensual violence are different than sport or dueling.