Are you seriously still arguing this point? The entry and how you got to that point in the picture is the entire ballgame.
Yes I'm still discussing the point of entry because there are techniques i use that don't require you to enter a specific way. There are multiple ways to get do the technique. For example, What wang shows in his clip. If I'm grabbed from behind around the neck. I could lock the arm in the exact same way as you see it in the in his video. The technique is the same the attack is different.
One of the things I don't like about TMA is the mindset of when someone does "A then I do B" students get stuck on that and they wait forever for that one attack. The way I train and see techniques is similar to When A then do B. Wnen C then do B, When F then do B. If you get stuck on A then you'll be waiting for a long time for that to happen.
In this case, A = someone walking up to you with the extended arm. that you say would never happen. For me and my experience, A has never happened. So,
When A then do B, is not realistic to me. However. When C (someone trying to grab me from behind) has happened more than twice and many times that gives me the opportunity to do B (twist arm)
So what I'm saying is don't get caught up on saying that a technique is invalid because the "entry is wrong." or not "realistic" There's alot of things in TMA that are demo that are not what you and I would call realistic attacks. But I can take that same technique and show you how it's used against another attack or how to use it offensively. Jow ga there's a technique that is used when your opponent attacks you. This attack is shown to all Jow Ga students.. If that's the specific attack that you are waiting on , then you will be waiting a long time for that type of attack to come along. However, if you take off Step1 one, of the technique which is dealing with an incoming punch, then you can start with step 2 and use it as an offensive technique.
It's the same technique with step 1 missing. I've only been able to pull off the school demo version of it twice in my life , but starting with step 2, I can pull it off with ease and at will, there's just more opportunity to use it when starting from step 2. I can use it against a number of straight punches and from various angles, where with step 1, I have to be in a specific angle facing my opponent in order for it to work. Will I ever use step one 1? of course but only if that opportunity comes. Realistically speaking, the types of punches that most people are doing, I can skip step 1.
If I show you this technique from step 1, then you will look at it and say that it's crap. If I show you this technique from step 2, then it would be hard for you to have the same opinion of it.