Which goes to prove the point, never underestimate anyone at anytime. Set your prejudged notions and stories, you have heard, aside.
A old high school friend's sister shared the same traits as the man in the clip. First meeting her, when I was 14 or 15, felt a bit awkward as how to act or what to say. Seems she had quite a sense of humor and easy to get along with. Never liked the term "special", seems so patronizing to say that (just my view). My friends sister was a little different, yes, but never removed by not being a part of her family. Family is strength. Sadly, she died a few years ago. A shorted life span appears to go along with this condition.
Folks with this trait (male/female) all appear to have a heavier muscular development around the neck, traps upper back the shoulder girdle. Read this a few years ago: it's as if their genetic codes were designed for power, not by any misguided mutation of those genes, but for a purpose.