From what I gather as to what is being said...the confusion lays in the mix, and that is the rub. With so many styles(thousands) and systems(more thousands), add to that the mixture of human emotion with not wanting to be wrong in what they teach. Now you have a one-sided look at a fight. What goes on in a real honest to goodness FIGHT? Fight, fighting, beating up someone, whopping them hard and fast, etc. You name it! The point here is the fight itself broke down to its simplest(is it really simple?) level. Everyone has an opinion until the storm hits. Unless you have been there and have seen the elephant then you just don't know. Unless, you train under and with the advise of those who have seen the elephant. Remember a few years ago when Tae kwon do was all the rage. Korean black belts at 1st degree suddenly became masters on board the airliner.
It's a sad fact that because there is no defining factor that too many people are fighting experts after training in a style of martial arts and in turn they teach like they have been in the "storm." I guess the only defining factor is real life. Walking the line and being in the middle of the "storm." Unless of course you are fortunate to train under good solid people who have been there and can advise you to how it really is.
It's too bad that egos prevail when it comes to learning. Too many people don't like to be showed up or come back to the basic level of a beginner, admitting that they could use more instruction.
The person who admits they could always use more instruction is a person who is willing to learn. Walking around with an enlarged ego is a sure fire way to found yourself on the floor looking up.