Yeah, what you say are all very good points. The techniques in the video are good techniques but what's the use of learning them if you don't practice them every day (preferably with a sparring partner in protective gear) until they become a reflex?
I once was told that you have to defeat your opponent in your dreams first before defeating them in reality. So actually visualizing your attackers first (like in shadow boxing) and then applying the techniques in earnest on a bag or sparring partner is the first order of business. In this case the body will learn to react even before your conscious mind does. But it takes constant practice. The constant practice will keep your body in a state of readiness. Psychological readiness is a prerequisite to physical readiness. I think true martial arts begins in a higher reality of energy exchanges and energy transference. Essentially it is a psychological/psychic battle. Mental training, critical thinking, mental blocking and focus is the real martial art imo.
The actual 'battle' in this physical reality is but a reflection of what goes on in the psychological/psychic spheres. The biker scene in the movie
'A Bronx Tale' is a good example at how having the
psychological edge/advantage, just before going into immediate action, can turn the tide on the opponent in an instant.