Actually, yes. Loi Lau Hoi Sung is something a WC student should be learning very early on, at least where I train. Maybe I could ask a 1 year student to come here and explain it to you.
And yes, it does take some time to get the intricacies of it to come out in the body, it is nothing 'so special' that any normal person with some time training can't grasp, with proper instruction of course.
While I would agree, Robert did a fair job with sharing some of his understanding of Loi Lau Hoi Sung concept, it isn't anything so 'mind blowing' as you are making out to be. It was basic level information. I did enjoy reading what he had to share, but lets not make a mountain out of a molehill
You can't tell any of that by a picture. Even video doesn't really tell the whole story when talking about LLHS.
And, looking at the picture, the legs are bent.
To someone with little to no understanding of the subject, it would appear precious I guess. Then again, "you are certainly correct according to your view."
As for loi lau hoi sung concept, it has nothing to do with 'lineage', only understanding. LLHS is about energy. It's a concept to help one understand how to receive energy as it comes into one's space, escort it to a place where it can't effect your center of gravity, and then setting up a strong position of your own. It can be done without footwork or with, and it can be used in any direction - horizontal, vertical or diagonal (depending on the energy you 'receive' once contact is made)
It also doesn't necessarily mean 'when he goes, I send him flying' during the 'hoi sung' as Robert describes.From my experience, a prefered result would mean you have successfully accepted and redirected the energy and are now in a strong position to hit. Why would you want to fly someone away anyway? To me that's giving up control you just gained during the 'loi lau'
FWIW, this isn't something you can learn by looking at a picture, videos, or reading from a book no matter how hard you try. You have to feel it. That means training and working against live opponents.