Wow, where to begin? First of all, the dummy form isn't where you should really show the style's speed. If I wanted to make a video demonstrating speed, then I show someone attacking me the way your average street brawler would. Second...okay, you can move fast on the dummy, but your techniques are sloppy. Check out the tan saos and bong saos. The tan sao is supposed to penetrate with forward energy (at least, it is supposed to do that in the dummy form), but with him...it's like he just places his hand against the dummy in way that KIND of looks like a tan sao. Same goes for bong sao. Then all the other videos are of other people, or from movies! Granted, YIP MAN is the closest display of real wing chun I have seen on film, but it still isn't 100% the way it'd be used in the street.
Now on to this lineage thing. He goes absolutely bonkers listing everyone he can think of when he trained in Tang Soo Doo and all the other styles he has dabbled in over the years, even going so far as to brag about training with Bill "Superfoot" Wallace. (What...did he attend a three-day seminar Bill held?) But then you notice when it comes time to talk about his wing chun training, he goes ABSOLUTELY SILENT. Plus his timeline is all confused: started in 1995, was a private student for 12 years...certified Sifu in 1999? Isn't that FOUR years? Am I just not grasping what he means there? Also, if he was primarily a private student, then his chi sao can't be all that good. If you practice chi sao with only one person (in this case, his Sifu), then you haven't really learned how to do it right because everyone has their own little nuances that they bring to the exercise. In other words, he can probably chi sao well...if his partner is his Sifu, or someone who does it LIKE his Sifu.
Last but not least, there is the reply to the email that is copied and pasted in a previous post on this thread. Is that actually REAL??? If the guy has an attitude like that, then I definitely wouldn't go for two reasons: (1) he sounds like a dick, and (2) he sounds like he is going for the hard sell. He wants you to come to the school to check it out instead of posting videos showing what he does because he knows that, once you have someone in front of you, it's harder for them to say "no" than it is to watch a video on Youtube and decide, "Meh, I'm not going there."