There are many large problems with the Moy Yat (Yip Man) version as performed here. The HFY looks like a completely different system not focused on the same things. TWC looks like it might be a highly corrupted form of YM- if so then hard to see how it wouldn't be broken beyond repair.
My personal perspective might be much the same. But, holy moly! This is no way to begin a productive discussion on an open forum!!! Are you really surprised at the hostile you got?
How about a less confrontational approach? I will try to demonstrate what I mean:
Yes, I too see some things in the Moy Yat VT version of SNT as shown that would be counterproductive ...from the perspective of the VT I practice. For example, the very high position of the double lan-sau or "bar arms" preceeding the double fak-sau movement (left hand frame at 2:30 in the clip) would be problematic in the context of my VT.
Interestingly, when I was first taught this, we also held our sheung lan sau or "double bar-arms" nearly as high as shown here. Later, I learned to let the lan sau settle to a lower position, more in front of the chest. I found this helped me maintain a better structure, with my shoulders relaxed and down, my weight sunken, and my stance better rooted. The slightly lower position also kept my arms and energy closer to centerline and reminded me to focus my energy and intent forward.
Those would be the essential reasons. There are also concerns that could be related to common applications ...such as keeping your arms lower so that you do not get uprooted, but rather can direct the resistance you receive from your opponent downward into your stance. I believe Alan Orr did a nice video on this relating to the way he uses bong-sau to press and move an opponent. We often aply lan-sau similarly. A caveat here would be that applications are specific, situational, and limited. They can be useful to as examples to illustrate how a technique can come into play, but in my VT they are not the reason behind the movements. That is conceptual.
Anyway, that would be my quick, off-the-cuff response ...from the perspective of what I do, expressed honestly, ...but without presuming to know what the Moy Yat practitioner intended, and without being judgemental. Maybe you could try a similar approach?
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